if looking for engine longevity what is max boost
Thread Starter
Drifting
Joined: May 2003
Posts: 1,551
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From: salt lake city UT
if looking for engine longevity what is max boost
probably building a forged 402 for use in the mountains...4500 ft.
what is the most boost u would run if you want longevity of the engine?
what is the most boost u would run if you want longevity of the engine?
Melting Slicks
Joined: Feb 2006
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Team Owner
Joined: Jul 2003
Posts: 20,474
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From: Detroit
I don't think any Maggie car is going to run anywhere near 135 MPH in the mountains.
As for the motor - I think (just based on years of forum viewing) the stock bore motors seem to last the longest and have the fewer incidence of oil consumption.
As for the motor - I think (just based on years of forum viewing) the stock bore motors seem to last the longest and have the fewer incidence of oil consumption.
Drifting
Joined: Mar 2005
Posts: 1,737
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From: Northern VA
Positive displacement blower definitely need not apply here 
Turbo is king when altitude comes into play.
Melting Slicks
Joined: Dec 2000
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A maggie won't cut it on a 402 at 4500 feet. If your going S/C try the F1R Procharger. Use a 3.70"-3.85" pulley....you'll make huge power down low and won't have to use the last 500-700 rpm of the motor. Set it up to make 8-9 lbs boost by 4500-5000rpm. Shifting under 6000rpm will increase the life of the motor. If you do an occasional rip to redline....the top end power will amaze you. The larger F1R makes power much sooner than smaller P1 or D1.
Advanced
Joined: Jan 2007
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Depends on how much lead is in your foot. If it's a lot, your longevity will definitely be reduced regardless of the type of FI. If you romp on it only occasionally you can run a lot of boost and have a long lived engine.
A turbo setup with an absolute pressure boost controller would be best as it will adjust to the altitude just in case you popped in to Los Angeles for the weekend.
And there is something to be said for the F1R moving A LOT of air. If you ran a BOV/boost controller, 2/3 bar tune with the F1R you could tune for altitude and run at sea level without overboost issues.
A turbo setup with an absolute pressure boost controller would be best as it will adjust to the altitude just in case you popped in to Los Angeles for the weekend.
And there is something to be said for the F1R moving A LOT of air. If you ran a BOV/boost controller, 2/3 bar tune with the F1R you could tune for altitude and run at sea level without overboost issues.
