Fast Intentions Stage 2 TT build by MA-Motorsports.

redondoaveb · 07-13-2021, 11:19 AM

Quote:

Originally Posted by Spooler

I wish I would have drilled/tapped the exhaust manifolds so I could check drive pressures on each turbo. I feel like I am flying blind trying to figure out where the turbo's are maxing out and if backpressure is becoming an issue. One mistake in this area can cost me a headgasket. Ideally you want no more than a 1:1 ratio. 30psi of boost/30 psi of drive pressure. This will tell you where the turbo's exhaust side is becoming a restriction. The only problem is this may cause the exhaust manifold to crack unless they were cast with a bung area to install it.

That's something FI could easily add during production and ship with plugs for the guys that won't utilize them

Spooler · 07-13-2021, 11:30 AM

Quote:

Originally Posted by redondoaveb

That's something FI could easily add during production and ship with plugs for the guys that won't utilize them

They would just need to cast a spot into the manifold. If you want it, you can drill and tap it to add it. For tubular manifolds it is not uncommon to see EGT ports on each runner for tuning purposes. All cylinders are not equal and a EGT gauge on each runner will give the tuner an idea of how much work it is doing so they can balance the cylinders out in the tune. To measure back pressure all that is needed is to weld on bung on for it. I don't see it as something FI would do for so few people that would use it. I would be better off to switch to the CJ motorsports tubular exhaust manifolds. I don't think I am going to go that far. I am about at the end of my road and I am happy with my car. At some point I will draw a line in the sand and say I am done. Did that with my truck too and have enjoyed it for many years.

Hotrodz · 07-13-2021, 11:42 AM

Quote:

Originally Posted by Spooler

They would just need to cast a spot into the manifold. If you want it, you can drill and tap it to add it. For tubular manifolds it is not uncommon to see EGT ports on each runner for tuning purposes. All cylinders are not equal and a EGT gauge on each runner will give the tuner an idea of how much work it is doing so they can balance the cylinders out in the tune. To measure back pressure all that is needed is to weld on bung on for it. I don't see it as something FI would do for so few people that would use it. I would be better off to switch to the CJ motorsports tubular exhaust manifolds. I don't think I am going to go that far. I am about at the end of my road and I am happy with my car. At some point I will draw a line in the sand and say I am done. Did that with my truck too and have enjoyed it for many years.

The great thing about drawing a line in the sand is you can cover it up and draw another line anytime you want! Just saying!!!

Time to go have fun!!!

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Spooler · 07-13-2021, 11:43 AM

Quote:

Originally Posted by Hotrodz

Time to go have fun!!!

Sent from my SM-G965U using Tapatalk

This ^^^^^^

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