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Search found 1488 matches

by Baprace
Fri Feb 14, 2020 1:41 pm
Forum: Engine Tech
Topic: Main bearing clearance
Replies: 26
Views: 933

Re: Main bearing clearance

BillK wrote:
Fri Feb 14, 2020 10:04 am
tenxal wrote:
Fri Feb 14, 2020 7:56 am
If the bearings have sufficient crush, why not simply use a set of .001 or .002 under main bearings?
If the bearing bores measure what he stated then the bearings will definitely not have enough crush.
BillK, has it correct.
by Baprace
Thu Feb 13, 2020 8:20 am
Forum: Engine Tech
Topic: Main bearing clearance
Replies: 26
Views: 933

Re: Main bearing clearance

Outlaw383 wrote:
Thu Feb 13, 2020 7:57 am
Yes I measured it and micd the crank journal how could I come up with the clearance without doing that. How do I know that? Because I saw the hack job that the machine shop did.
What is the main bearing housing bore size, that may help on the bearing clearance issue.
by Baprace
Thu Jan 23, 2020 5:02 am
Forum: Engine Tech
Topic: balancing crank - turning counterweights
Replies: 52
Views: 5567

Re: balancing crank - turning counterweights

ptuomov, you have mail.
by Baprace
Fri Dec 27, 2019 2:06 am
Forum: Engine Tech
Topic: 3.4 Buick piston question.
Replies: 4
Views: 360

Re: 3.4 Buick piston question.

Just watched a rerun of Mechum <-sp auction last night and one of Scott Brayton's and one of Arie Lyundike's Indy 500 cars were run through the auction, both cars were reported to have 3.4 Buick engines , If I remember correctly Scott Brayton held the track record at 237.??? mph.
by Baprace
Tue Dec 03, 2019 4:27 am
Forum: Engine Tech
Topic: 5/16" valve stems on intake lash changing?
Replies: 18
Views: 983

Re: 5/16" valve stems on intake lash changing?

Joe-71 , any info from the valve manufacturers, is the stretch normal ? Keep us posted , this is a serious issue, any info is appreciated.
by Baprace
Sat Nov 30, 2019 12:15 am
Forum: Engine Tech
Topic: 5/16" valve stems on intake lash changing?
Replies: 18
Views: 983

Re: 5/16" valve stems on intake lash changing?

The intake valves will close up .006" from .012" down to 006". Have bent one intake push rod when trying to get the lash to .010" hot like suggested on card. Let the engine cool down, and lash returns to cold setting. This happens during dyno testing(40+pulls). Tried .018, .016, .012, ..010" and on...
by Baprace
Fri Nov 29, 2019 11:55 pm
Forum: Engine Tech
Topic: Stuck headstuds in aluminum block
Replies: 25
Views: 1302

Re: Stuck headstuds in aluminum block

Got this SBF alu Block. 1/2" studs won't come out. Outer studs, maybe water seeped in, or? Middle Three worst. Tried two nuts counterbound, no Luck. Going to try heat. Any other suggestions? Mayby just leaving the studs alone would be the best decision, once you fu%k it up you have alot bigger prob...
by Baprace
Fri Nov 29, 2019 11:38 pm
Forum: Engine Tech
Topic: 5/16" valve stems on intake lash changing?
Replies: 18
Views: 983

Re: 5/16" valve stems on intake lash changing?

Joe-71 , how much lash is missing ?
by Baprace
Wed Nov 27, 2019 6:58 am
Forum: Engine Tech
Topic: Stuck headstuds in aluminum block
Replies: 25
Views: 1302

Re: Stuck headstuds in aluminum block

Got this SBF alu Block. 1/2" studs won't come out. Outer studs, maybe water seeped in, or? Middle Three worst. Tried two nuts counterbound, no Luck. Going to try heat. Any other suggestions? Mayby just leaving the studs alone would be the best decision, once you fu%k it up you have alot bigger prob...
by Baprace
Sat Nov 23, 2019 7:51 am
Forum: Engine Tech
Topic: Piston pin end clearance?
Replies: 20
Views: 758

Re: Piston pin end clearance?

What do you say is a minimum and maximum pin to lock ring clearance ? Would it be the same for forged or cast? Would a larger bore need more or less clearance? Thanks I am happy with .005 pin to lock clearance, mayby .010 on the outside of my happy end play, .000 is a little too close for me but I ...
by Baprace
Tue Nov 19, 2019 9:33 pm
Forum: Engine Tech
Topic: Valve springs discoloured
Replies: 4
Views: 494

Re: Valve springs discoloured

I agree with Kevin , you may have some springs out of one batch and some springs out of another batch.
by Baprace
Mon Nov 04, 2019 7:53 am
Forum: Engine Tech
Topic: Where do I put the new rods?
Replies: 21
Views: 1076

Re: Where do I put the new rods?

If you only have a 6 counter weight Crank then put the heavier Rod and piston assy near the front and rear of the motor, not near the center where your missing 2 counter weights ! Also if the Rods your reusing have have more then 4 torque up session on the bolts them then your playing with Fire aga...
by Baprace
Sat Sep 14, 2019 5:35 am
Forum: Chassis / Suspension / Body
Topic: Snapping sound in the suspension..
Replies: 1
Views: 235

Re: Snapping sound in the suspension..

I would pull the spring and possibly lube the ends, it sounds like the spring is not rotating in the spring seat.
by Baprace
Fri Aug 23, 2019 7:14 pm
Forum: Engine Tech
Topic: SBC Piston pin - Spirolock or pressed ?
Replies: 12
Views: 695

Re: SBC Piston pin - Spirolock or pressed ?

I'm trying to put together a budget SBC build for an old pickup truck. The Silvolite pistons are 35-37 grams heavier than the pistons that were originally in the engine. The piston pin in the Silvolite pistons weighs 144 grams. These are basic cast pistons designed for a pressed pin. I found a Manl...
by Baprace
Mon Aug 05, 2019 10:40 pm
Forum: Engine Tech
Topic: Clevite H series main bearings ???s
Replies: 5
Views: 436

Re: Clevite H series main bearings ???s

I just received a set of H series main bearings, and was wondering if the bluish/gray appearance is anything to be concerned about as they look horrib le. As far as prepping bearings what is best for a drag race application (small journal chevy crank) . Any input/advice on bearing prep would be ver...