What Do I Do With Pos Turbo??

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12-08-2002, 04:41 PM

saabguy

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Thread Starter

Join Date: Dec 2002

Location: Atlanta

Posts: 15

Hello. I think im going to blow my motor if I keep letting boost run to 15psi.

Can someone tell me what the best route is for this?

A. Port wastegate

B. Clip turbine wheel

C. Weld external w/g

I dont know if I want to buy a new turbo.

Car and mods;

87 t2

Greddy FMIC for Stock turbo

S5 turbo with upgraded compressor (like just a little large)

GSLSE secondary injectors

Walbro 255 HP rewired to 14.4 constant

Apexi SAFC

RB Turbo back exhaust

RB FCD

3" straight tid and k&n cone intake

Thank you!!!

12-08-2002, 04:42 PM

saabguy

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Thread Starter

Join Date: Dec 2002

Location: Atlanta

Posts: 15

Soon to install Aeromotive fpr

12-08-2002, 04:44 PM

Silver Ninety Three

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Join Date: Oct 2001

Location: Clifton, NJ

Posts: 1,675

Why do you think you are going to blow your motor? Do you have enough fuel?

12-08-2002, 05:49 PM

saabguy

Junior Member

Thread Starter

Join Date: Dec 2002

Location: Atlanta

Posts: 15

enough fuel???? Well Im unable to tell what my duty cycle is, but I know it has to be close to max. I do have larger secondaries and fuel pump buy its still a grey area.

Im going to install the aeromotive fpr before the end of the year. Does the stok fuel pressure rise with boost???

Once school is out I also want to port my w/g a bunch.

Any suggestions?

12-08-2002, 05:53 PM

1Revvin7

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Join Date: Oct 2001

Location: Peoria, AZ

Posts: 10,906

You need to port the stock wastegate. Can't you tell you're duty cycle with the S-afc? you could throw some bigger secondaries in there to be safe. Atleast you have a some fuel mods.

12-08-2002, 05:57 PM

Rotaryman88

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Join Date: Aug 2001

Location: Pimp'n ain't E-Z! But driving ur FD makes it easier!

Posts: 2,705

You can purchase a pop-off valve from Rx7.com...set the spring to 12psi or something and be happy w/ it...

...boost controller would work too.

12-08-2002, 06:02 PM

Erik

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Join Date: Nov 2001

Location: New Jersey YO!

Posts: 458

yeah, port the wastegate...

i have: 91 T2

2.5" DP

2.5" MP

No Cats

Cone Intake

Ported Wastegate

and don't see over

6psi @ WOT in 1st...

7psi @ WOT in 2nd...

8psi @ WOT in 3rd...

never really went WOT in 4th or 5th...car is much faster than stock

good luck! :bigthumg:

12-08-2002, 06:03 PM

1Revvin7

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Join Date: Oct 2001

Location: Peoria, AZ

Posts: 10,906

Quote:

Originally Posted by Rotaryman88' date='Dec 8 2002, 06:57 PM

You can purchase a pop-off valve from Rx7.com...set the spring to 12psi or something and be happy w/ it...

...boost controller would work too.

totally forgot about that... yeah that would work only if his wastegate is nicely ported, he would probably see some boost spikes.

12-08-2002, 06:12 PM

saabguy

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Join Date: Dec 2002

Location: Atlanta

Posts: 15

Well thankfully my bov cant hold **** so it opens at 15 psi.. I do know that is awful for the turbo though.

Apexi SAFC does not tell duty cycle.

680cc injectors is larger than stock. Not large enough??? Dammit!