Added MBC's, little concern now...
#1
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Added MBC's, little concern now...
So I added a set of MBC's per robrobinette.com I have been running 17-18 vac before I added them (I could only boost to 7psi of course) and after I added these, I have it at about 9 psi and the car is measuring 16/17 with a very rare dip to 15 if the idle drops a little. Car is still smooth and runs fantastic...just the haunting thoughts that I could have done something during my couple of boost pulls...
Trev
Trev
#2
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i attempted to use the "home depot" boost controllers for a long time, and i could NEVER dial in 10 psi on both turbos.
i could make it do anything on the primary, but the secondary just would not work.
i was using one for the pre-spool as well, which i now think is a mistake.
i could make it do anything on the primary, but the secondary just would not work.
i was using one for the pre-spool as well, which i now think is a mistake.
#3
Racecar - Formula 2000
i attempted to use the "home depot" boost controllers for a long time, and i could NEVER dial in 10 psi on both turbos.
i could make it do anything on the primary, but the secondary just would not work.
i was using one for the pre-spool as well, which i now think is a mistake.
i could make it do anything on the primary, but the secondary just would not work.
i was using one for the pre-spool as well, which i now think is a mistake.
Read these posts - lots of good info here:
https://www.rx7club.com/showpost.php...6&postcount=10
#4
Racecar - Formula 2000
So I added a set of MBC's per robrobinette.com I have been running 17-18 vac before I added them (I could only boost to 7psi of course) and after I added these, I have it at about 9 psi and the car is measuring 16/17 with a very rare dip to 15 if the idle drops a little. Car is still smooth and runs fantastic...just the haunting thoughts that I could have done something during my couple of boost pulls...
Trev
Trev
I doubt you did any harm.
Dave
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Well, it is a manual boost controller dave, not an electric one, so I wouldn't think any calibration is necessary. I was thinking that the needles weren't that consistent as well and I need to do ball and spring type
Trev
Trev
#6
Racecar - Formula 2000
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#8
sleeper
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i attempted to use the "home depot" boost controllers for a long time, and i could NEVER dial in 10 psi on both turbos.
i could make it do anything on the primary, but the secondary just would not work.
i was using one for the pre-spool as well, which i now think is a mistake.
i could make it do anything on the primary, but the secondary just would not work.
i was using one for the pre-spool as well, which i now think is a mistake.
#9
White chicks > *
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So I added a set of MBC's per robrobinette.com I have been running 17-18 vac before I added them (I could only boost to 7psi of course) and after I added these, I have it at about 9 psi and the car is measuring 16/17 with a very rare dip to 15 if the idle drops a little. Car is still smooth and runs fantastic...just the haunting thoughts that I could have done something during my couple of boost pulls...
Trev
Trev
The car is measuring 16/17 PSI or vac?
Im assuming you're talking about vac now but i would double check your hose connections.
I also have the turboxs MBC and when i was fooling around with my intake filters, i pinched one of the lines that run from the BC to the turbo and i guess that caused the no boost (little boost) and fluctuating vac at idle.
#10
Cheap Bastard
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IMO, running a needle valve on the prespool line is a mistake. The length of the hose makes proper adjustment nearly impossible. I suggest that you reinstall the original line (with the pill in it). Running a single needle valve on the wastegate line will give you good flexibility of adjustment, and good results.
Regarding idle vacuum, don't worry about it
Regarding idle vacuum, don't worry about it
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