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Forum: Pontiac - Street 04-07-2024, 07:57 PM
Replies: 21
Views: 1,226
Posted By LM93
Keep in mind, the way aluminum fatigues means...

Keep in mind, the way aluminum fatigues means that all aluminum rockers have a finite number of stress cycles before failure, no matter how well they're made. Fine for a race car that can change...
Forum: Pontiac - Street 08-27-2023, 06:25 PM
Replies: 28
Views: 1,782
Posted By LM93
Dye penetrant tests can find defects too fine for...

Dye penetrant tests can find defects too fine for Mag tests, but they need a smooth surface to not hold dye. Sanding stone will work great.
Forum: Pontiac - Street 08-27-2023, 06:05 PM
Replies: 28
Views: 1,782
Posted By LM93
Shine a flashlight at different angles to see If...

Shine a flashlight at different angles to see If you can find a shadow. Scratches reflect light, cracks don't. The machinist may have found the crack by magnaflux test, and I have seen false...
Forum: THE LOBBY 08-12-2023, 09:52 AM
Replies: 14
Views: 906
Posted By LM93
Have you ever used gold-leafed weld lenses? They...

Have you ever used gold-leafed weld lenses? They make quite a difference TIG welding.
Forum: Pontiac - Street 04-21-2023, 05:17 PM
Replies: 40
Views: 2,921
Posted By LM93
As always, the real story is in the comment...

As always, the real story is in the comment section.
Forum: Pontiac - Street 12-17-2022, 06:45 AM
Replies: 16
Views: 981
Posted By LM93
I'd love a set of 304SS tri-y headers. I've read...

I'd love a set of 304SS tri-y headers. I've read a lot of people complain about ground clearance on their street cars with 4-1 headers, and 304 isn't going to rust out anytime soon.
Forum: Heating & Cooling TECH 08-27-2022, 04:30 AM
Replies: 11
Views: 1,604
Posted By LM93
Silicon hoses are a bad idea for anything other...

Silicon hoses are a bad idea for anything other than a dedicated track car. It's only advantage is higher pressure and temperature resistance, and not by much. Silicone is five times more water...
Forum: Pontiac - Street 04-08-2022, 06:32 AM
Replies: 13
Views: 1,534
Posted By LM93
It may be good for all current makes and models...

It may be good for all current makes and models but maybe not old ones. HOAT stuff is used in a huge range of vehicles(Ford, Mercedes), so it probably has a wide range of compatibility. I've done a...
Forum: Pontiac - Street 04-08-2022, 12:45 AM
Replies: 13
Views: 1,534
Posted By LM93
You may be right about the solder brass/copper...

You may be right about the solder brass/copper radiators. The old neon green is for those types of cooling systems, for corrosion and lubricating the water pump. Aluminum should have different...
Forum: OHC 6 Buy/Sell/Trade 03-24-2022, 07:02 AM
Replies: 12
Views: 2,304
Posted By LM93
Thanks for the responses. I've decided to stay...

Thanks for the responses. I've decided to stay on the V8 route.
Forum: Pontiac - Boost 11-23-2021, 06:23 PM
Replies: 2
Views: 1,788
Posted By LM93
Is it possible to use a draw-thru carb on a twin-screw supercharger?

Weighing some options for a boosted 350, and the only example of a carbureted whipple style supercharger I've found is this one:...
Forum: Pontiac - Boost 10-14-2021, 05:43 AM
Replies: 13
Views: 2,064
Posted By LM93
Things you’ll need. Turbo: I have a general...

Things you’ll need.
Turbo: I have a general idea for what I need but I'll ask ask some experts to help get me the right trim, bearing, etc.
Turbo headers: I'm a welder, been doing a lot of CRES,...
Forum: Pontiac - Boost 10-14-2021, 04:48 AM
Replies: 13
Views: 2,064
Posted By LM93
So, messing around with BW Matchbot puts me in...

So, messing around with BW Matchbot puts me in the 68-78mm wheel size range. Borg Warner seems to be the only company that gives you a bunch of their compressor maps. Precision/Turbonetics don't,...
Forum: Pontiac - Boost 10-14-2021, 03:51 AM
Replies: 13
Views: 2,064
Posted By LM93
From MotorAuthority.com: "Let's start with...

From MotorAuthority.com:

"Let's start with boost threshold. That's the term to describe the engine speed required to produce enough exhaust gas flow that in turn generates the boost a turbo needs...
Forum: Pontiac - Boost 10-12-2021, 04:00 PM
Replies: 13
Views: 2,064
Posted By LM93
500-600hp weekend cruiser/ track day road course....

500-600hp weekend cruiser/ track day road course. Nothing crazy. I just want to make sure the turbo system is made properly.
Forum: Pontiac - Boost 10-12-2021, 07:37 AM
Replies: 13
Views: 2,064
Posted By LM93
Question How equal do exhaust manifolds need to be for a twin scroll turbo?

If you are trying to use a single turbo on a V8, the turbo will probably need to be located off to one side of the engine bay, right? If it is, then the exhaust from one bank of cylinders will have...
Forum: OHC-6 TECH 09-10-2021, 05:30 AM
Replies: 2
Views: 1,519
Posted By LM93
Scattershield?

Can a BOP scatter shield with dual starter bulges be made to work? Depending on how much power a turbo build makes I'd feel safer with a steel bell housing instead of cast aluminum.
Forum: OHC 6 Buy/Sell/Trade 09-08-2021, 04:22 AM
Replies: 12
Views: 2,304
Posted By LM93
Are the cylinder heads for one or four barrel...

Are the cylinder heads for one or four barrel engines?
Forum: OHC 6 Buy/Sell/Trade 09-05-2021, 04:55 PM
Replies: 12
Views: 2,304
Posted By LM93
Seattle area.

Seattle area.
Forum: OHC 6 Buy/Sell/Trade 09-03-2021, 05:48 PM
Replies: 12
Views: 2,304
Posted By LM93
WTB: Entire engine, any year, any size.

Interested in putting a turbocharged ohc6 in my '79 frankenbird. Not having much luck with the local wrecking yards in the Seattle, WA area. Am willing to pay for freight shipping.
Forum: Pontiac - Boost 09-02-2021, 01:20 AM
Replies: 25
Views: 7,368
Posted By LM93
Can't caltrac setups cause issues in hard...

Can't caltrac setups cause issues in hard cornering?
Forum: OHC-6 TECH 08-14-2021, 06:21 AM
Replies: 14
Views: 3,837
Posted By LM93
Boost 'till it breaks?:p

Boost 'till it breaks?:p
Forum: Pontiac - Boost 08-14-2021, 05:56 AM
Replies: 37
Views: 12,015
Posted By LM93
Do you think hypereutectic pistons are good...

Do you think hypereutectic pistons are good enough? I'm concerned about them surviving any preignition and detonation I get while trying to get a good tune once the engine's been assembled.
Forum: OHC-6 TECH 08-13-2021, 03:05 AM
Replies: 14
Views: 3,837
Posted By LM93
If the pistons were a unique design, could...

If the pistons were a unique design, could pistons from a different engine with the same dimensions be made to work? Those Jeep I6 ones have close numbers and are forged.

Forged rods for the Chevy...
Forum: OHC-6 TECH 08-13-2021, 01:44 AM
Replies: 14
Views: 3,837
Posted By LM93
https://forums.maxperformanceinc.com/forums/attach...

https://forums.maxperformanceinc.com/forums/attachment.php?attachmentid=571074&d=1628590195

It's been done before. And I thought I was being original.:rolleyes:
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