JRSC not making boost
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From: ITRCA Midwest Director, Topeka, KS
JRSC not making boost
Car drives fine and idles perfect. It is only when you get on the gas do you notice a loss of power. From my datalogs, only 1.3-1.5 psi is being made.
There are no vacuum leaks - I tested with carb cleaner and moving hose while engine running.
JRSC was making 9 psi 2 days ago, however, I did the following:
Removed the LHT manifold and installed JRSC manifold.
Swapped headgasket for new OEM
Changed 3.8 nose cone pulley for 4.2 pulley
I still have the MVM stepper on, so I should be making ~7 psi.
When I rev the motor, I don't hear the blower working like I used to. It sounds and feels like a N/A motor.
The belts are tight (I rechecked them). The blower is just over 1 year old.
I can't figure this out and I am about ready to walk away from this car for good.
Please help.
There are no vacuum leaks - I tested with carb cleaner and moving hose while engine running.
JRSC was making 9 psi 2 days ago, however, I did the following:
Removed the LHT manifold and installed JRSC manifold.
Swapped headgasket for new OEM
Changed 3.8 nose cone pulley for 4.2 pulley
I still have the MVM stepper on, so I should be making ~7 psi.
When I rev the motor, I don't hear the blower working like I used to. It sounds and feels like a N/A motor.
The belts are tight (I rechecked them). The blower is just over 1 year old.
I can't figure this out and I am about ready to walk away from this car for good.
Please help.
Thread Starter
Honda-Tech Member
Joined: Feb 2004
Posts: 1,698
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From: ITRCA Midwest Director, Topeka, KS
Re: JRSC not making boost
It was one of two things - not sure which one.
blower to manifold leak is what I suspect.
The other possibility is the vacuum cap that goes on the bottom of the blower/s tube (it broke apart when removing the blower this last time, so it could have been craked or punctured before. I will never know).
I am generating full boost now.
Words of advice - Do not ever use the M62 blower to manifold gasket that Jackson sells. I have given it a try twice now and both times I have had to drop the blower AGAIN and use Hondabond. The stupid gasket will not give an air tight seal.
blower to manifold leak is what I suspect.
The other possibility is the vacuum cap that goes on the bottom of the blower/s tube (it broke apart when removing the blower this last time, so it could have been craked or punctured before. I will never know).
I am generating full boost now.
Words of advice - Do not ever use the M62 blower to manifold gasket that Jackson sells. I have given it a try twice now and both times I have had to drop the blower AGAIN and use Hondabond. The stupid gasket will not give an air tight seal.
Honda-Tech Member
Joined: Feb 2002
Posts: 308
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From: G.T.A, Ontario., Canada
Re: JRSC not making boost
It was one of two things - not sure which one.
blower to manifold leak is what I suspect.
The other possibility is the vacuum cap that goes on the bottom of the blower/s tube (it broke apart when removing the blower this last time, so it could have been craked or punctured before. I will never know).
I am generating full boost now.
Words of advice - Do not ever use the M62 blower to manifold gasket that Jackson sells. I have given it a try twice now and both times I have had to drop the blower AGAIN and use Hondabond. The stupid gasket will not give an air tight seal.
blower to manifold leak is what I suspect.
The other possibility is the vacuum cap that goes on the bottom of the blower/s tube (it broke apart when removing the blower this last time, so it could have been craked or punctured before. I will never know).
I am generating full boost now.
Words of advice - Do not ever use the M62 blower to manifold gasket that Jackson sells. I have given it a try twice now and both times I have had to drop the blower AGAIN and use Hondabond. The stupid gasket will not give an air tight seal.
Thread Starter
Honda-Tech Member
Joined: Feb 2004
Posts: 1,698
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From: ITRCA Midwest Director, Topeka, KS
Re: JRSC not making boost
144. I have not taken it on track again though. A couple years ago at VIR I was seeing 212 degrees during the sessions.
Within the 2 months that I had the high boost setup on and 1 track event, the rotor coating flaked off a good bit. I would recommend sending your blower to Endyn for work prior to high boost and intercooling. That is what I would do if I could do it again. But, I would not use a large radiator block off plate (intercooler) like I had before either.
FYI - Link to my for sale thread:
http://www.hondamarketplace.com/show....php?t=2810377
Within the 2 months that I had the high boost setup on and 1 track event, the rotor coating flaked off a good bit. I would recommend sending your blower to Endyn for work prior to high boost and intercooling. That is what I would do if I could do it again. But, I would not use a large radiator block off plate (intercooler) like I had before either.
FYI - Link to my for sale thread:
http://www.hondamarketplace.com/show....php?t=2810377
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