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Help, What should I do to the car next?
#11

Eric, an IHI should be a good autocross turbo, but I doubt it will be a good open track one. Not that I have the experience actually doing open track runs, but I really think that if you are thinking long term, an IHI will leave you disappointed in a couple of years. If you can pick up one for peanuts now, and then consider upgrading it, that might work.
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#12

Quote:Originally posted by Mike T:
I have a T4(.57 trim)/T3(.63 A/R) on my "fast" XR and it is a crappy auto-x car--boost doesn't come up until 3000 rpm+ and when it does HOLD ON! .
use a stage III turbine and make sure you have excellent exhuast flow. From the valve al the way to the tailpipe.
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#13

Quote:Originally posted by Mike T:
He is auto-xing (Solo II) not road course racing. Even in Solo I time trials there are no other cars on the course. There is no need to pass anyone, he is the only one on the track. It is vitally important to have excellent throttle response for auto cross. I have a T4(.57 trim)/T3(.63 A/R) on my "fast" XR and it is a crappy auto-x car--boost doesn't come up until 3000 rpm+ and when it does HOLD ON! This is not what you want when you are auto-xing. Smooth, reliable power that doesn't overwhelm the chassis. Smooth=Fast. More power does not mean faster lap times.
Hah! You should try MY XR on an autocross course! No boost until about 3800 rpm and then really hold on. :eek:

I would go to a smaller turbo for quicker spool up time but the car is really a do-all machine and I am not willing to do that.

Mike
Tired of single digit LS Turbo cars, came back to TurboFord!
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#14

Quote:Originally posted by MikeLTDLX:
Hah! You should try [b]MY XR on an autocross course! No boost until about 3800 rpm and then really hold on[/b]
That is how mine was, only about 4000 RPM. I changed from a .63 to a .48 housing, and am getting boost a good 1000 RPM sooner. This is just a stock T3, but the cam in my car is a beast.
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#15

Quote:Originally posted by 67King:
Quote:Originally posted by MikeLTDLX:
[b]Hah! You should try [b]MY XR on an autocross course! No boost until about 3800 rpm and then really hold on[/b]
That is how mine was, only about 4000 RPM. I changed from a .63 to a .48 housing, and am getting boost a good 1000 RPM sooner. This is just a stock T3, but the cam in my car is a beast.[/b]
Yeah, well 3800 is where it starts to make boost...it is not fully in until about 4200 rpm.

I am sure it has alot to do with that stupid A237 I have in the car. Makes great power up top though..... Wink
Tired of single digit LS Turbo cars, came back to TurboFord!
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#16

Quote:Originally posted by 85SVO-c-prep:

On another note. I hear some talk about a T-rex inline pump and the 255 in tank that I have. Is this something I should look into a little more as time progresses?

Eric
The 255 should be providing more than enough fuel for your application.
86 Mustang SVO - Sold long ago
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#17

Quote:Originally posted by 85SVO-c-prep:
I do have an adjustable cam gear, just forgot to list it. However, I have the one that requires you to remove the cam center bolt to adjust. .
You could replace the bolt with a stud/nut.
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#18

Quote:Originally posted by MikeLTDLX:
I am sure it has alot to do with that stupid A237 I have in the car. Makes great power up top though..... Wink [/QB]
I have an A237 in my TC and I get full boost by 2800 rpm I have the .63 t-3. Maybe its the difference in the weight of the cars? :dunno:
2000 jeep GC
1979 mustang notch
84 ranger 351w
1998 contour svt
3tc powered sandrail.
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#19

Quote:Originally posted by sctur601:
Quote:Originally posted by MikeLTDLX:
I am sure it has alot to do with that stupid A237 I have in the car. Makes great power up top though..... Wink
I have an A237 in my TC and I get full boost by 2800 rpm I have the .63 t-3. Maybe its the difference in the weight of the cars? :dunno: [/QB]
I don't know. I have a hybrid that I "think" is a 50 trim with a .63 A/R. However, I don't know for sure. I do know that it has a real 50 trim housing with a 4 inch unlet. My car is light, yeah, but still. Maybe I should try a Gillis valve. Mine is a well made ball and spring type that was made in a machine shop by the former owner but you never know....it may suck.

Mike
Tired of single digit LS Turbo cars, came back to TurboFord!
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#20

Maybe its because of the hybrid. Do you have a stage III turbine? I thought those were supposed to let the turbo make boost sooner I guess it still depends on the car though. My turbo is also ported, same with the exhaust manifold if that makes any difference.
2000 jeep GC
1979 mustang notch
84 ranger 351w
1998 contour svt
3tc powered sandrail.
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