Project' 69 c10 aka sin. - Page 12 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

OilDrum68 · 03-11-2010, 02:10 AM

I'd also check the wear patterns on the rod where it was wedged under the crank. It could have very well thrown the rod long before the 'goose' into the snowbank, just the bump from impact knocked the piston further down into the cylinder where the rod then wedged itself in the position you found it.

Otherwise I'm stumped. :P

threeonthetree · 03-11-2010, 02:28 AM

Yeah I have just the info that my dad tells me. My dad said the motor was done right when my uncle goosed it into the snowbank.P are you saying the crank wore that much in a instant.
I belive one bearing was in the case. My dad pulled the junk piston I wasn't in the shop.
And he sleeps.
The rod cap is In two pieces.
All the other bearings seem to be in good shape. Should have checked my crank play.

The crank spun a bearing tho. So you could be right

Is the crank junk because of all the wear.

threeonthetree · 03-11-2010, 02:33 AM

well throwing the rods bearings could explain marks on the head and piston right.
And when he goosed it the rod broke and snapped the cam.
And there she sat.

The rod is kinda pounded I can look for wear.

threeonthetree · 03-11-2010, 02:46 AM

Is the crank junk?

Is the block junk?

Are these heads worth anything?

How about the 180 degree intake?

Thanks for your help bud.^^^^^^^^

Oh yes an go back a page to view lots of pics.

Everytime I get going and put pics up I get a new page

OilDrum68 · 03-11-2010, 02:51 AM

Chances are it was a spun rod bearing that finally gave up the ghost when the truck hit the snowbank.

The wear on the head has me perplexed though... is there any damage to the valves? You'd think that if the piston had contacted the head enough to actually score it, there's be some kind of valve damage, but I had trouble telling from the photo.

The damage is a combination of long-term wear and an abrupt meltdown when conditions were right. Somebody more knowledgeable can help shed more light on this... my dad was a mechanic for 30-some-odd years, and while I've done my share of wrenching, I'm far from an expert on things.

OilDrum68 · 03-11-2010, 03:03 AM

To answer your questions... (you posted while I was writing)

Crank... junk. That wear is too excessive to do anything to it, judging by the photo.

Block... probably junk too. You might be able to sleeve those cylinders, depending on how close the water jackets are to the cylinder walls, but you're probably better off just tearing apart the 69 and seeing what you have to work with there.

Heads... it depends. With the wear mark from the piston, and any possible valve seat damage, it may or may not be junk. Once again, somebody more experienced with rebuilding heads could be of more assistance than myself.

The intake manifold looks like it's for a quadrajet carb or similar, that has small primaries and larger secondaries. It may be worth something to the right person, since quadrajets are a nice fuel-efficient carb, they just get a bad rap because they're more difficult to tune correctly than more user-friendly carbs.

I have a quadrajet on my 327, that I'm planning on rebuilding in the next couple of weeks, after we move house this weekend.

Good luck on your project... I've read through this whole thread, and I wish I had the skills you do at your age. Keep it up, you're doing some nice work.

threeonthetree · 03-11-2010, 03:03 AM

No valve damage at all. Mark on piston and head. Not much must have only hit once. The whole thing puzzles me. And you would think after the cam broke a valve would hit the piston.

I'm gonna ask my shop teacher tomorrow.

I wish my dad knew more haha. I like this project. I can't wait to tear into that 69 350.

threeonthetree · 03-11-2010, 03:05 AM

Thanks man!

threeonthetree · 03-11-2010, 03:28 AM

Thanks for all the answers David. u have been a big help.
I figured it was all junk. Should i hang it up or scrap it all? haha

And it's nice to know someone looks at this thread I feel like I'm clogging up the board sometimes.

I just jump in and do it this truck has taught me more than how to drive.

I'm tearing down motors.. Sweet.

I took a class this semester called trans power 2. first shop class I took in high school. We're tearing down lawn mower motors, brigs and strat. I have mine all the way tore down already were as the rest of the class is far behind still trying to figure out how to take the plastic shrouds off. Haha I guess motors make sense..
At least something does.

Thanks again David.
Got a build thread?

o

threeonthetree · 03-11-2010, 09:47 AM

im just reposting this cause i still have no solid answer.

Quote:

Originally Posted by threeonthetree

so i got the engine all tore down. lifters are out.

here are some pics.

As you can see this is the first piston on the left.
see the scoring where the rod was wedged in there.

pic of the rod that killed this 350

see all the wear on the crank how much of a diffrence there is on the first area where the connecting rod bolts on. compare it to the rest. the one furthest away. what caused this????
baaad

doesnt seem like a horrible motor besides for the rod and what not.

the head you can see where the piston scored the head...
closest chamber to you

pic of bed material freeeeee

did a lot of work on the bed today.. welded footings on and drilled holes and painted. showed my little brother a thing or two about welding

hopefullly i get that 69 block home and its a lot nicer than this one...
thats it for now comment ask ? give me answers to why there is so much wear on the crank...??

threeonthetree · 03-11-2010, 02:37 PM

Still wondering what caused the crank to wear so bad?
was the engine running on 7?

oldblue1968chevy · 03-11-2010, 10:48 PM

I wish i could help ya but know as much as you lol good luck!

threeonthetree · 03-11-2010, 11:29 PM

I'm just gonna take it as it is. my uncle wrecked it and its garbage now haha.
maybe i can get some money for scrap...
no sense in trying to figure out why or what happened.. still i wonder.....

I also am glad i had this motor to take apart before i start on that 69 block because i made some mistakes like keeping track of parts. that i wont make when disassembling the 69 block.
here is a couple pics i took last weekend of the 69. and the blazers 350

Read above.

69

The blazer 350.

culp7 · 03-11-2010, 11:43 PM

me being a huge L6 fan i have to say one last thing before you commit to that v8.

i just read an article about how if you don't have a muffler you lose a ton of throttle responce and develope a lack of acceleration w/ out a muffler due to lack of back pressure, since your runnin a open header, i'd at least try to throw a cheap turbo muffler on it or something to see if power improves, because my stock 250 six is pretty dang peppy.

haha man, just sayin, but do whatever makes you happy, if you want the v8 do it! at least you ain't driven a POS ricer. lol

bryant

threeonthetree · 03-11-2010, 11:52 PM

haha at least don't have a ricer, i still burn rice in my dirt bikes but that's all good

i know that if i was running a muffler it would improve the acceleration and torque. 20 bucks and i could have myself a cheap glass pack. ill see i know what back pressure does for a motor. Having a bunch of 2 strokes with that big expander on them i get it.

I still think rebuilding a v8 sounds like a lot of fun. Plus the plan is to pull that 69 350 and put my 250 into my dads truck to get her running again.. ha true rat rod, patina on that old girl. i would leave it as is.. lack of floors and all. haha.

i just wonder what this truck would be like with 100 more horses,

maybe get a posi...

culp7 · 03-12-2010, 12:03 AM

Quote:

Originally Posted by threeonthetree

Plus the plan is to pull that 69 350 and put my 250 into my dads truck to get her running again.. ha true rat rod, patina on that old girl. i would leave it as is.. lack of floors and all. haha.

..

to hell with my idea i like this one the best!

your pa's truck would be a B.A. rot rod

threeonthetree · 03-12-2010, 12:06 AM

Hell yeah it would!!!
i would leave everything as is the tires would even air up. Cause its sitting on blocks so they aren't cracked.
sometimes i wonder why i didn't just restore that one.. but then again it is such a rot rod.
you cant even find the floor boards and the seat is gone..

culp7 · 03-12-2010, 12:11 AM

Quote:

Originally Posted by threeonthetree

Hell yeah it would!!!
i would leave everything as is the tires would even air up. Cause its sitting on blocks so they aren't cracked.
sometimes i wonder why i didn't just restore that one.. but then again it is such a rot rod.
you cant even find the floor boards and the seat is gone..

i'd drive the hell out of it for a while and build up some courage to tackle that rust, but its always nice to have a truck you can beat the sh#@ out of and just not worry bout it lol

threeonthetree · 03-13-2010, 09:36 PM

well today i picked up a muffler for the six.
a rebuild is prolly not going to happen for awhile. till we get that block home. and i want to start driving this thing.
so the six is here to stay here for a while..
got a thrush turbo muffler not a glasspack ran the same price. i didnt really want a glass pack.
truck sounds pretty quiet now.

still have to finish the install.

and work on the bed.
havent done much this weekend been kinda lazy maybe progress tomorrow..

oldblue1968chevy · 03-13-2010, 10:18 PM

lol well save up and build the 350 how you want

lazy you should come down south, ive been bustin' you know what truck SHOULD be a roller again tomorow!!! check my thread for a few pics (look pretty the same a few new ones thought)

threeonthetree · 03-14-2010, 08:44 PM

Pics of the exhaust set up.

truck is quiet now. haha. and has better back pressure and doesnt dogg out as much. the six pulls its own.. seems like a different motor.

oldblue1968chevy · 03-14-2010, 09:28 PM

Thats an awesome wheelie! Dunno how you do it on 2 wheels...

Truck looks good is that a 450 or 250 bike? exhaust is awesome. now you've gotta get another one comming out opposite site when ya get that 350

threeonthetree · 03-14-2010, 10:02 PM

crf250
Four stroke.
Wheelies I can shift and walk them.

Yeah the exsaust is nice

samwise68 · 03-15-2010, 03:56 PM

Let's hear the exhaust man!

And yes, build the 350 like you want it. A stock 350 will more than push your pickup, probably more than enough to get you in trouble.

Good work as always, it's really coming along. As for the 2 wheeled jobs...well. Thats pretty neat too.

-Sam.

threeonthetree · 03-16-2010, 11:28 PM

Quote:

Originally Posted by samwise68

Let's hear the exhaust man!

And yes, build the 350 like you want it. A stock 350 will more than push your pickup, probably more than enough to get you in trouble.

Good work as always, it's really coming along. As for the 2 wheeled jobs...well. Thats pretty neat too.

-Sam.

Clip to come. I'm having some real trouble getting the exhast to seal at the manifold.
I know some sixers read this thread.
Anybody want to let me in on how your manifold looks when it connects to the down pipe.
Is there a donut in between the 2.
Any help is apprciated. This is really bothering me.

Someday for the 350 buildup.

Thanks Sam. 2 wheels are fun.

My cousin just got a 77 jeep hah thing is pretty cool. I'll have a pic of it.

03-11-2010, 02:10 AM	#276
OilDrum68 Registered User Join Date: Feb 2010 Location: Chico, CA Posts: 23	Re: Project' 69 c10 aka sin. I'd also check the wear patterns on the rod where it was wedged under the crank. It could have very well thrown the rod long before the 'goose' into the snowbank, just the bump from impact knocked the piston further down into the cylinder where the rod then wedged itself in the position you found it. Otherwise I'm stumped. :P __________________ David 1968 Chevy C-20 CST LWB Fleetside

03-11-2010, 02:28 AM	#277
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. Yeah I have just the info that my dad tells me. My dad said the motor was done right when my uncle goosed it into the snowbank.P are you saying the crank wore that much in a instant. I belive one bearing was in the case. My dad pulled the junk piston I wasn't in the shop. And he sleeps. The rod cap is In two pieces. All the other bearings seem to be in good shape. Should have checked my crank play. The crank spun a bearing tho. So you could be right Is the crank junk because of all the wear. __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base) Last edited by threeonthetree; 03-11-2010 at 02:35 AM.

03-11-2010, 02:33 AM	#278
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. well throwing the rods bearings could explain marks on the head and piston right. And when he goosed it the rod broke and snapped the cam. And there she sat. The rod is kinda pounded I can look for wear. __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base)

03-11-2010, 02:46 AM	#279
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. Is the crank junk? Is the block junk? Are these heads worth anything? How about the 180 degree intake? Thanks for your help bud.^^^^^^^^ Oh yes an go back a page to view lots of pics. Everytime I get going and put pics up I get a new page __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base) Last edited by threeonthetree; 03-11-2010 at 02:48 AM.

03-11-2010, 02:51 AM	#280
OilDrum68 Registered User Join Date: Feb 2010 Location: Chico, CA Posts: 23	Re: Project' 69 c10 aka sin. Chances are it was a spun rod bearing that finally gave up the ghost when the truck hit the snowbank. The wear on the head has me perplexed though... is there any damage to the valves? You'd think that if the piston had contacted the head enough to actually score it, there's be some kind of valve damage, but I had trouble telling from the photo. The damage is a combination of long-term wear and an abrupt meltdown when conditions were right. Somebody more knowledgeable can help shed more light on this... my dad was a mechanic for 30-some-odd years, and while I've done my share of wrenching, I'm far from an expert on things. __________________ David 1968 Chevy C-20 CST LWB Fleetside

03-11-2010, 03:03 AM	#281
OilDrum68 Registered User Join Date: Feb 2010 Location: Chico, CA Posts: 23	Re: Project' 69 c10 aka sin. To answer your questions... (you posted while I was writing) Crank... junk. That wear is too excessive to do anything to it, judging by the photo. Block... probably junk too. You might be able to sleeve those cylinders, depending on how close the water jackets are to the cylinder walls, but you're probably better off just tearing apart the 69 and seeing what you have to work with there. Heads... it depends. With the wear mark from the piston, and any possible valve seat damage, it may or may not be junk. Once again, somebody more experienced with rebuilding heads could be of more assistance than myself. The intake manifold looks like it's for a quadrajet carb or similar, that has small primaries and larger secondaries. It may be worth something to the right person, since quadrajets are a nice fuel-efficient carb, they just get a bad rap because they're more difficult to tune correctly than more user-friendly carbs. I have a quadrajet on my 327, that I'm planning on rebuilding in the next couple of weeks, after we move house this weekend. Good luck on your project... I've read through this whole thread, and I wish I had the skills you do at your age. Keep it up, you're doing some nice work. __________________ David 1968 Chevy C-20 CST LWB Fleetside

03-11-2010, 03:03 AM	#282
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. No valve damage at all. Mark on piston and head. Not much must have only hit once. The whole thing puzzles me. And you would think after the cam broke a valve would hit the piston. I'm gonna ask my shop teacher tomorrow. I wish my dad knew more haha. I like this project. I can't wait to tear into that 69 350. __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base)

03-11-2010, 03:05 AM	#283
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. Thanks man! __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base)

03-11-2010, 03:28 AM	#284
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. Thanks for all the answers David. u have been a big help. I figured it was all junk. Should i hang it up or scrap it all? haha And it's nice to know someone looks at this thread I feel like I'm clogging up the board sometimes. I just jump in and do it this truck has taught me more than how to drive. I'm tearing down motors.. Sweet. I took a class this semester called trans power 2. first shop class I took in high school. We're tearing down lawn mower motors, brigs and strat. I have mine all the way tore down already were as the rest of the class is far behind still trying to figure out how to take the plastic shrouds off. Haha I guess motors make sense.. At least something does. Thanks again David. Got a build thread? o __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base) Last edited by threeonthetree; 03-11-2010 at 09:46 AM.

03-11-2010, 02:37 PM	#286
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. Still wondering what caused the crank to wear so bad? was the engine running on 7? __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base)

03-11-2010, 10:48 PM	#287
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: Project' 69 c10 aka sin. I wish i could help ya but know as much as you lol good luck! __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

03-11-2010, 11:29 PM	#288
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. I'm just gonna take it as it is. my uncle wrecked it and its garbage now haha. maybe i can get some money for scrap... no sense in trying to figure out why or what happened.. still i wonder..... I also am glad i had this motor to take apart before i start on that 69 block because i made some mistakes like keeping track of parts. that i wont make when disassembling the 69 block. here is a couple pics i took last weekend of the 69. and the blazers 350 Read above. 69 The blazer 350. __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base)

03-11-2010, 11:43 PM	#289
culp7 HickTown Join Date: Apr 2009 Location: ANDOVER, Kansas Posts: 355	Re: Project' 69 c10 aka sin. me being a huge L6 fan i have to say one last thing before you commit to that v8. i just read an article about how if you don't have a muffler you lose a ton of throttle responce and develope a lack of acceleration w/ out a muffler due to lack of back pressure, since your runnin a open header, i'd at least try to throw a cheap turbo muffler on it or something to see if power improves, because my stock 250 six is pretty dang peppy. haha man, just sayin, but do whatever makes you happy, if you want the v8 do it! at least you ain't driven a POS ricer. lol bryant __________________ 1993 Ford Mustang Vert w/ 2.3 1969 Chevy C/10 w/350 1968 Chevy C-20 w/250 1976 Dodge Aspen W/ 225 2000 Toyota Tundra w/4.7 1987 Dodge Ram D-100 w/360 255/70-15 ___________ (oo)══╬══(oo) ‾‾‾‾‾‾‾‾‾‾‾

03-11-2010, 11:52 PM	#290
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. haha at least don't have a ricer, i still burn rice in my dirt bikes but that's all good i know that if i was running a muffler it would improve the acceleration and torque. 20 bucks and i could have myself a cheap glass pack. ill see i know what back pressure does for a motor. Having a bunch of 2 strokes with that big expander on them i get it. I still think rebuilding a v8 sounds like a lot of fun. Plus the plan is to pull that 69 350 and put my 250 into my dads truck to get her running again.. ha true rat rod, patina on that old girl. i would leave it as is.. lack of floors and all. haha. i just wonder what this truck would be like with 100 more horses, maybe get a posi... __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base)

03-12-2010, 12:06 AM	#292
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. Hell yeah it would!!! i would leave everything as is the tires would even air up. Cause its sitting on blocks so they aren't cracked. sometimes i wonder why i didn't just restore that one.. but then again it is such a rot rod. you cant even find the floor boards and the seat is gone.. __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base)



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03-13-2010, 09:36 PM	#294
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. well today i picked up a muffler for the six. a rebuild is prolly not going to happen for awhile. till we get that block home. and i want to start driving this thing. so the six is here to stay here for a while.. got a thrush turbo muffler not a glasspack ran the same price. i didnt really want a glass pack. truck sounds pretty quiet now. still have to finish the install. and work on the bed. havent done much this weekend been kinda lazy maybe progress tomorrow.. __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base)

03-13-2010, 10:18 PM	#295
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: Project' 69 c10 aka sin. lol well save up and build the 350 how you want lazy you should come down south, ive been bustin' you know what truck SHOULD be a roller again tomorow!!! check my thread for a few pics (look pretty the same a few new ones thought) __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

03-14-2010, 08:44 PM	#296
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. Pics of the exhaust set up. truck is quiet now. haha. and has better back pressure and doesnt dogg out as much. the six pulls its own.. seems like a different motor. __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base)

03-14-2010, 09:28 PM	#297
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: Project' 69 c10 aka sin. Thats an awesome wheelie! Dunno how you do it on 2 wheels... Truck looks good is that a 450 or 250 bike? exhaust is awesome. now you've gotta get another one comming out opposite site when ya get that 350 __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

03-14-2010, 10:02 PM	#298
threeonthetree Registered User Join Date: Feb 2009 Location: Wausau, WI Posts: 975	Re: Project' 69 c10 aka sin. crf250 Four stroke. Wheelies I can shift and walk them. Yeah the exsaust is nice __________________ Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base)

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