#221  
Old 09-19-2021, 06:00 PM
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ErikW ErikW is offline
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I think I'm going to replace the lifters with some high end solids and do the hybrid thing as we had an awful lot of valve train noise out of these Crane hydraulic rollers. Not at all happy with them, but they were the best we could source at the time. Just hope Herb at Luhn can hook me up with another cam. I really like the power and drivability of this grind.

What really sucks is if this wouldn't have happened we would have won our class and fastest Pontiac award during Drag Week.

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1964 GTO
501, Edelbrock Heads NA, 3460 lbs.
9.76 @ 137mph
1971 Trans Am Lucy Blue, 11.56 @ 115
1966 LeMans. 462, SD prepped Kaufman D ports. 11.90 @ 112
1976 Trans Am twin turbo 462, SD Edelbrock heads 8.50@159
2009 G8 GT
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  #222  
Old 09-19-2021, 08:07 PM
AIR RAM AIR RAM is offline
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I picked up a set of Johnson Short Travel Lifters ( ST21120PR ) for my build...

I have a set of USED COMP CAMS 857s if interested... Not solids


SPEED SAFE, NICK

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  #223  
Old 09-19-2021, 10:54 PM
73 TRANSAM 73 TRANSAM is offline
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I'm glad you only have cam and lifter damage. No need to deal with machine work downtime and buying some bottom end parts. I was surprised when you said that you had a rod knock and found your running an Oliver rods and Crower crank. You did not cheap out on your bottom end parts selection. Good luck

  #224  
Old 09-20-2021, 07:02 AM
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Quote:
Originally Posted by 73 TRANSAM View Post
I'm glad you only have cam and lifter damage. No need to deal with machine work downtime and buying some bottom end parts. I was surprised when you said that you had a rod knock and found your running an Oliver rods and Crower crank. You did not cheap out on your bottom end parts selection. Good luck
Thank you!

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1964 GTO
501, Edelbrock Heads NA, 3460 lbs.
9.76 @ 137mph
1971 Trans Am Lucy Blue, 11.56 @ 115
1966 LeMans. 462, SD prepped Kaufman D ports. 11.90 @ 112
1976 Trans Am twin turbo 462, SD Edelbrock heads 8.50@159
2009 G8 GT
  #225  
Old 09-20-2021, 12:32 PM
Curtis Slowe Curtis Slowe is offline
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Originally Posted by ErikW View Post
18 deg
Why just 18 degrees of timing?

  #226  
Old 09-20-2021, 01:34 PM
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Why just 18 degrees of timing?
Creeping up on timing and boost. Reading plugs after every pass. Baby steps. We've got too much time and money invested to just put a "moon tune" in it and send it. We've been down that road with our LS Camaro. Melted 2 pistons from too much timing and not enough fuel. Not going to repeat that.

So from what some boosted experts are telling me. They think the aluminum rockers are the culprit. Too much flex under boost in the exhaust rockers so I will switch up to Crower Stainless Rollers when she goes back together along with a stud girdle and lifter bore brace just for peace of mind. Bullet can fix the cam they said so I'll be sending that off. Probably going to hone and re-ring while we're at it.

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1964 GTO
501, Edelbrock Heads NA, 3460 lbs.
9.76 @ 137mph
1971 Trans Am Lucy Blue, 11.56 @ 115
1966 LeMans. 462, SD prepped Kaufman D ports. 11.90 @ 112
1976 Trans Am twin turbo 462, SD Edelbrock heads 8.50@159
2009 G8 GT

Last edited by ErikW; 09-20-2021 at 01:43 PM.
  #227  
Old 09-20-2021, 01:55 PM
Curtis Slowe Curtis Slowe is offline
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Quote:
Originally Posted by ErikW View Post
Creeping up on timing and boost. Reading plugs after every pass. Baby steps. We've got too much time and money invested to just put a "moon tune" in it and send it. We've been down that road with our LS Camaro. Melted 2 pistons from too much timing and not enough fuel. Not going to repeat that.

So from what some boosted experts are telling me. They think the aluminum rockers are the culprit. Too much flex under boost in the exhaust rockers so I will switch up to Crower Stainless Rollers when she goes back together along with a stud girdle and lifter bore brace just for peace of mind. Bullet can fix the cam they said so I'll be sending that off. Probably going to hone and re-ring while we're at it.
I get it. That's just really low I believe. Lots more left for sure.

  #228  
Old 09-21-2021, 11:48 AM
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There are Pontiac people out there running 40 psi of boost who run even less timing with great durability and 4 horsepower per cubic inch power levels.

People who run high levels of timing on boosted engines are the Parts Suppliers best friends. Eric W has timing on a boosted engine figured out.

Tom V.

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  #229  
Old 09-24-2021, 07:33 AM
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That sure looks familiar. I exploded a Comp solid roller wheel on DW 2015. Replaced with bushed Crowers.

Nice meeting you and your wife at Byron. Hopefully cya next year.

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  #230  
Old 09-24-2021, 09:06 AM
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Quote:
Originally Posted by Hooter View Post
That sure looks familiar. I exploded a Comp solid roller wheel on DW 2015. Replaced with bushed Crowers.

Nice meeting you and your wife at Byron. Hopefully cya next year.
Nice meeting you too. I'm either going to go with bushed Crowers or BAMs.

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1964 GTO
501, Edelbrock Heads NA, 3460 lbs.
9.76 @ 137mph
1971 Trans Am Lucy Blue, 11.56 @ 115
1966 LeMans. 462, SD prepped Kaufman D ports. 11.90 @ 112
1976 Trans Am twin turbo 462, SD Edelbrock heads 8.50@159
2009 G8 GT
  #231  
Old 09-24-2021, 06:47 PM
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Piston #4 of the group for sure las a large crack in a bas spot on the piston.
But you might be able to grind enough of the crack away and still have a strong piston.

Tom V.

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  #232  
Old 10-06-2021, 02:17 AM
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R 70 Judge R 70 Judge is offline
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So since you have some driving/racing miles on the combo, what are your thoughts on the stainless headers? How are they holding up? Any issues?

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  #233  
Old 10-06-2021, 07:20 AM
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So since you have some driving/racing miles on the combo, what are your thoughts on the stainless headers? How are they holding up? Any issues?
They work great, only issue we haven't completely solved yet is that the front header bolt on each side tends to loosen up after a couple passes or a long road trip. It has fallen out several times. We are trying different length bolts and lock washers. There is not enough room for one of the locking type bolts in our application because of the front motor plate. Those two bolts are a son of a bitch to install and service because of it. In a situation with no front plate it would not even be an issue. We use a Remflex gasket with them and that might be a cause but I like to know that they are well sealed. We monitor back pressure and so far we have seen a fairly equal amount of BP to boost. Overall they are performing great. No signs of cracking or distortion. Great product.

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1964 GTO
501, Edelbrock Heads NA, 3460 lbs.
9.76 @ 137mph
1971 Trans Am Lucy Blue, 11.56 @ 115
1966 LeMans. 462, SD prepped Kaufman D ports. 11.90 @ 112
1976 Trans Am twin turbo 462, SD Edelbrock heads 8.50@159
2009 G8 GT
  #234  
Old 10-06-2021, 12:00 PM
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Quote:
Originally Posted by ErikW View Post
They work great, only issue we haven't completely solved yet is that the front header bolt on each side tends to loosen up after a couple passes or a long road trip. It has fallen out several times. We are trying different length bolts and lock washers. There is not enough room for one of the locking type bolts in our application because of the front motor plate. Those two bolts are a son of a bitch to install and service because of it. In a situation with no front plate it would not even be an issue. We use a Remflex gasket with them and that might be a cause but I like to know that they are well sealed. We monitor back pressure and so far we have seen a fairly equal amount of BP to boost. Overall they are performing great. No signs of cracking or distortion. Great product.
Awesome! I really appreciate the feedback. Regarding the header bolts, I remember my old Buick Turbo 6 buddies using header bolts with safety wire going through them to keep them from backing out. I'm not sure if this is what you mean by locking bolts. I looked and had a hell of a time finding any online.

The set -up basically looked like this
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Terminator X sequential EFI fabrication and suspension by
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  #235  
Old 10-06-2021, 02:43 PM
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Years ago, I had a set of JR Headers that were custom "Flat Collector" headers.
They adapted "D-Port" ported Heads to "Round Port" Headers.

They used a very unique adaptor plate that attached to the heads with "counter-sunk" head fasteners.
Then, the round port headers attached to the Adaptor plate using different mounting holes vs the Pontiac ones.

These headers were extremely to install or remove and the fasteners to the heads were "Trapped" and could not back off.
The header plate fastener holes were away from the heat of the exhaust ports on the head and would not "back off" either.
Some very nicely designed and built headers and how they were retained on the D-Port heads.

Food for thought.

Tom V.

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  #236  
Old 10-06-2021, 02:46 PM
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HWYSTR455 HWYSTR455 is offline
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First couple heat cycles on header gaskets, you have to tighten them hot. Once the gasket takes a 'set', they shouldn't loosen. if they do, they are moving around for other reasons.

.

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  #237  
Old 10-06-2021, 02:48 PM
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Quote:
Originally Posted by R 70 Judge View Post
Awesome! I really appreciate the feedback. Regarding the header bolts, I remember my old Buick Turbo 6 buddies using header bolts with safety wire going through them to keep them from backing out. I'm not sure if this is what you mean by locking bolts. I looked and had a hell of a time finding any online.

The set -up basically looked like this
That is probably our best option. We had discussed going with a safety wire setup and will probably do that while the engine is out being repaired. Thanks.

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1964 GTO
501, Edelbrock Heads NA, 3460 lbs.
9.76 @ 137mph
1971 Trans Am Lucy Blue, 11.56 @ 115
1966 LeMans. 462, SD prepped Kaufman D ports. 11.90 @ 112
1976 Trans Am twin turbo 462, SD Edelbrock heads 8.50@159
2009 G8 GT
  #238  
Old 10-06-2021, 06:00 PM
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Torqued a couple of times after head heat cycles and then safety wired may be your best option.

Tom V.

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Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
  #239  
Old 10-06-2021, 06:47 PM
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Quote:
Originally Posted by Curtis Slowe View Post
Why just 18 degrees of timing?
Depends on what the initial timing is and what fuel he's running also. IMO

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  #240  
Old 10-06-2021, 09:25 PM
AIR RAM AIR RAM is offline
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Quote:
Originally Posted by ErikW View Post
They work great, only issue we haven't completely solved yet is that the front header bolt on each side tends to loosen up after a couple passes or a long road trip. It has fallen out several times. We are trying different length bolts and lock washers. There is not enough room for one of the locking type bolts in our application because of the front motor plate. Those two bolts are a son of a bitch to install and service because of it. In a situation with no front plate it would not even be an issue. We use a Remflex gasket with them and that might be a cause but I like to know that they are well sealed. We monitor back pressure and so far we have seen a fairly equal amount of BP to boost. Overall they are performing great. No signs of cracking or distortion. Great product.
Stage-8 makes header bolts for Pontiac. Might be something to look into... I have run them on other engines, really like them. They can be a PITA to install and remove, depending on header arrangement and accessibility ... but once they are installed, they keep the bolts from backing out.

Just looked them up: PN #8916S
https://www.stage8.com/gm-performanc...der-bolt-kits/

SPEED SAFE, NICK

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