Custom Twin Turbo
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Teching In
Joined: Sep 2003
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Custom Twin Turbo A mustang shop looking to get into f-body turbos wants to build me a custom twin turbo set up. He gave me this list of components.
Custom-built 60mm Hybrid Turbocharger
Custom-built mandrel-bent Jet-Hot "Sterling" ceramic-coated exhaust headers
Custom-built mandrel-bent Jet-Hot "Sterling" ceramic coated turbo kit tubing
TIAL 38mm aluminum billet wastegate
Bosch blowoff valve
Custom-built aluminum high-efficiency air/air Intercooler
8 upgraded fuel injectors
Silicone reinforced intercooler hoses
Stainless steel high torque T-Bolt hose clamps
Stainless steel V-Band clamps
S&B conical intake air filters
Custom-built exhaust to cat-back piping
Computer program upgrade
How does it look? What questions should I have for him?
Thanks guys
Custom-built 60mm Hybrid Turbocharger
Custom-built mandrel-bent Jet-Hot "Sterling" ceramic-coated exhaust headers
Custom-built mandrel-bent Jet-Hot "Sterling" ceramic coated turbo kit tubing
TIAL 38mm aluminum billet wastegate
Bosch blowoff valve
Custom-built aluminum high-efficiency air/air Intercooler
8 upgraded fuel injectors
Silicone reinforced intercooler hoses
Stainless steel high torque T-Bolt hose clamps
Stainless steel V-Band clamps
S&B conical intake air filters
Custom-built exhaust to cat-back piping
Computer program upgrade
How does it look? What questions should I have for him?
Thanks guys
Re: Custom Twin Turbo Are they Jet-Hoting stainless steel or mild steel? Never heard of coating stainless because it expands so much. Coating the inside of mild can be a bad thing on turbo cars. If a large piece of the coating comes off and hits the exhaust wheel it could ruin the turbo. A stainless manifold would be best if they know how to design it so it can properly expand + contract without cracking.
Some questions for them
1) Is the manifold going to be equal length tubes or a log manifold? Stay away from the log if possible.
2) What are they using for boost control. They maybe relaying on the wastegate spring. I would install and aftermarket electronic boost controller. Helps build boost faster, holds boost more steady, and also has built in fail safes if something goes wrong.
3) Are the oil returns from the turbos going to be gravity feed or are they going to use pumps?
4) Have they made other turbo kits successfully already? Any one can weld up a turbo exhaust manifold and say it’s a custom kit. If they don’t know what they are going it will not perform well.
You said it was a twin turbo set up so I am assuming there will be 2 Custom-built 60mm Hybrid Turbochargers,2 TIAL wastegates, 2 air/air Intercooler
mark
Some questions for them
1) Is the manifold going to be equal length tubes or a log manifold? Stay away from the log if possible.
2) What are they using for boost control. They maybe relaying on the wastegate spring. I would install and aftermarket electronic boost controller. Helps build boost faster, holds boost more steady, and also has built in fail safes if something goes wrong.
3) Are the oil returns from the turbos going to be gravity feed or are they going to use pumps?
4) Have they made other turbo kits successfully already? Any one can weld up a turbo exhaust manifold and say it’s a custom kit. If they don’t know what they are going it will not perform well.
You said it was a twin turbo set up so I am assuming there will be 2 Custom-built 60mm Hybrid Turbochargers,2 TIAL wastegates, 2 air/air Intercooler
mark
Re: Custom Twin Turbo messes up the exhasut pulses so equal length flows better. you can read corkey bells book maximum boost for more details.
ALso i had my piping cermic coated, inside and out. If it will flake on the inside, it will also be flaking on the outside, and something would be wrong, from to much heat. that coating can really stand up.
ALso i had my piping cermic coated, inside and out. If it will flake on the inside, it will also be flaking on the outside, and something would be wrong, from to much heat. that coating can really stand up.
Re: Custom Twin Turbo Would a log manifold still work ok though? I'm looking to make around 500rwhp with the stock compression and possibly alky/water injection if needed until I can build up a new short block.
I'll definitely check out that book.
I'll definitely check out that book.
Re: Custom Twin Turbo My old incon manifolds were log style. Stock motored cars can make near 600RWHP with the right fuel. Mine was at 700RWHP before i ran out of turbo.
Logs will work just fine for most applications.
Logs will work just fine for most applications.
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Re: Custom Twin Turbo the stock manifolds are still 'logs' but at least they point toward the exit of the mainfold where as the ls1m kits log entries are nearly perpindicular. and even after that 8 cyls are going through that log instead of 4 on each of the incon manifolds.
Re: Custom Twin Turbo On a single, yeah you might have issues. Your really better of joining the two banks at the inlet to the turbo.
But a pair of log manifolds for a twin setup will be cost effective, and make more power than the average person needs
But a pair of log manifolds for a twin setup will be cost effective, and make more power than the average person needs
Re: Custom Twin Turbo
the stock manifolds are still 'logs' but at least they point toward the exit of the mainfold where as the ls1m kits log entries are nearly perpindicular. and even after that 8 cyls are going through that log instead of 4 on each of the incon manifolds.
Re: Custom Twin Turbo
messes up the exhasut pulses so equal length flows better. you can read corkey bells book maximum boost for more details.
ALso i had my piping cermic coated, inside and out. If it will flake on the inside, it will also be flaking on the outside, and something would be wrong, from to much heat. that coating can really stand up.
ALso i had my piping cermic coated, inside and out. If it will flake on the inside, it will also be flaking on the outside, and something would be wrong, from to much heat. that coating can really stand up.
The inside of the piping will see much more heat than the outside. The whole purpose of coating the inside is so the heat is not absorbed by the piping and stays inside. Just have it coated by a reputable place. May want to get in writing that it will not flake off on the inside and that they would be responsible for the damage to your turbo if it does.
mark
