Vacume PSI after porting and single turbo
#1
Injected with a Poison
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Vacume PSI after porting and single turbo
i just wanted to compare notes, i just finished putting my car together with a garret TS04 turbo and rebuilt street ported motor. i used 89 turbo II low compression rotors with 3mm seals. with this setup im getting about 14 to 15 psi vacume with a slight miss when in idle. sometimes it gets real bad and drops to like 10 or 11 psi and a real nasty miss. i thought maybe this motoe was blown but you check the vacume sepererately front and back and they are the same.
thanks in advance
ROB
thanks in advance
ROB
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I get around 11in/hg at 1000rpm idle, with a small miss. With no load the idle drops down to about 750 and i pull about 9in/hg with moderate missing.
The Motor is a Pineapple Racing Stage 3 with Large Race Port, stock turbo's. Sounds like your Vacuum numbers are good to me.
The Motor is a Pineapple Racing Stage 3 with Large Race Port, stock turbo's. Sounds like your Vacuum numbers are good to me.
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r u guys using stock or aftermarket ECU's. Right now im using the stock ECU, but i do have a Haltec E6K that i plan on installing soon. its just that that vacume and miss has had me worried. the mech that built the engine said i might have slightly curved the apex seals causing the vacume to drop, but that didnt really make much sense to me. Motor pulls real hard in boost so i really cant explain it
#6
Weird Cat Man
I have a mild/moderate port with a T04S and I run anywhere from 14-16 inches Hg depending on the AFR. Try running your AFR at around 12.8 at idle and see if your vacuum picks up some.
Brian
Brian
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#12
Originally posted by rob20rx7
well... based on all your posts so far. it looks like my engine is fine. im at 13hg at 1100 rpm just checked last night.
thanks for all the responses
rob
well... based on all your posts so far. it looks like my engine is fine. im at 13hg at 1100 rpm just checked last night.
thanks for all the responses
rob
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