skc supercharger build
#602
rev it up
Thread Starter
I had the same issue at the track. The problem is caused by a misalignment and it can be resolved by cutting the pipe and adding a silicon hump pipe. This will allow the aluminium pipe to sit in position.
In my situation my mechanic machined a aluminium ring that was placed at the plenum end and that pushed the pipe further back and the O ring has stayed in place since.
In my situation my mechanic machined a aluminium ring that was placed at the plenum end and that pushed the pipe further back and the O ring has stayed in place since.
#604
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Thread Starter
Time slip. Hopefully I will get better with practice.
Lots of oil on the ESS from the oil leak from the pulley causing cel and hestiation
Lots of oil on the ESS from the oil leak from the pulley causing cel and hestiation
#608
rev it up
Thread Starter
I started noticing getting misfire codes after the second run and only noticed the excessive oil on the ESS the next day. The drags was held at night so I did not notice the excessive oil leak.
The lack of power was most evident when I got into 4th gear and it was not pulling as hard and some hesitation was evident.
I was expecting an ET of around 13.6 so I will try again in the near future.
#609
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Thread Starter
I am still using the original bypass valve however I experimented with several springs before I got it right. I currently have two springs cut down so when it is fully compressed the plunger goes in fully. I have a large diameter spring and a smaller spring sitting in the middle. This provides even force on the plate and stops it from getting snagged.
I also sealed the top of the bypass valve with sealant as it was another source of vacuum leak.
After tracking down all sources of leaks then it is a matter of getting a good tune.
#610
rev it up
Thread Starter
Car booked in to fix the crank oil leak.
Today I added another one way check valve to the vacuum going to the purge air line going to the fuel tank.
Also cleaned a lot of baked carbon on the trailing spark plug seat and cleaned the spark plugs and reinstalled. Subsequent run felt good and car ran strong.
Looking forward to the retune in the near future.
Today I added another one way check valve to the vacuum going to the purge air line going to the fuel tank.
Also cleaned a lot of baked carbon on the trailing spark plug seat and cleaned the spark plugs and reinstalled. Subsequent run felt good and car ran strong.
Looking forward to the retune in the near future.
#612
rev it up
Thread Starter
#613
Registered
I misunderstood what you were saying earlier. Both the jet air and OMP lines should be connected to a filtered atmospheric air source with check valves. They should not have either vacuum or boost. However, you could technically argue that the jet air could be plugged or removed entirely on an FI application. I recall that OD removed it on his Pettit set up.
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On mine, the jet air is connected to the plastic OMP distribution block, boost goes backwards through the jet air nozzles to pressurize the OMP injectors and allow oil to be injected during boost, are you saying I need a check valve here?.
Last edited by Rote8; 05-09-2015 at 08:22 PM.
#614
rev it up
Thread Starter
The lim is under vacuum at cruise and idle and during boost it presurises and pushes air out on the lim causing boost leak and adding boost to components that should not see boost.
The addition of a one way valve allows vacuum to operate as usual and prevents boost from escaping.
The addition of a one way valve allows vacuum to operate as usual and prevents boost from escaping.
#615
No respecter of malarkey
iTrader: (25)
Yeah, it won't hurt anything, but the tank side of the solenoid would likely would never see boost unless the valve internals fail. Usually the solenoid energizer fails though and it's normally-closed (energizes to open) so it would be an extremely rare failure for sure. Plus your boost level is not that high. If you were running 3 bar or something it might be different. You are probably under 1 bar, right?
#616
rev it up
Thread Starter
Only running 8psi with original factory engine on 2003 model car with 100 000 mile on the engine. I will up the boost when I eventually rebuild with strengthened motor.
I will leave the check valve as an added precaution.
I will leave the check valve as an added precaution.
#617
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Thread Starter
I noticed a minor oil leak around the oil rear OMP injector. The black hose seemed to be connected and there was evidence of fresh oil on the nut-like mechanism. Space is limited so I fiddled around to find any loose hoses.
There was one hose that appeared to go to the fuel rail and when I pressed on it it seemed to move in and clicked. Perhaps it was loose???
I then sprayed some brake cleaner and then some water to clean the area.
On my way to work this morning the car was idling high at around 1800rpm. This usually means that the vacuum parameters have changed since the last start. So I did a quick 20 stomp and the idle was still high. I did it again after a little while and the idle finally dropped however, it is still slightly high a around 1000rpm.
Not sure if water on SSV connectors could have effected things? Although, this would have dried up after the drive to work.
I will investigate again when i get home this evening. The car runs fine and goes into full boost and redline as usual and no aparent loss of power.
There was one hose that appeared to go to the fuel rail and when I pressed on it it seemed to move in and clicked. Perhaps it was loose???
I then sprayed some brake cleaner and then some water to clean the area.
On my way to work this morning the car was idling high at around 1800rpm. This usually means that the vacuum parameters have changed since the last start. So I did a quick 20 stomp and the idle was still high. I did it again after a little while and the idle finally dropped however, it is still slightly high a around 1000rpm.
Not sure if water on SSV connectors could have effected things? Although, this would have dried up after the drive to work.
I will investigate again when i get home this evening. The car runs fine and goes into full boost and redline as usual and no aparent loss of power.
#618
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Thread Starter
Puchased a new longer silicon coupler to replace the existing for the compressor outlet pipe. I had cut this pipe and the coupler and the clamp kept playing and loosing vacuum up as it was difficult to tighten. Now that I have a longer coupler I can put a better clamp and tighten it properly. This should now resolve the last of my vacuum leak issues.
The next plan is to clean the intercooler as there is a lot of oil in it from past. It appears the this issue has vastly improved.
At the same time I will take measurements to see if I can lay the intercooler flat for better cooling.
Then I can get this retuned.
The next plan is to clean the intercooler as there is a lot of oil in it from past. It appears the this issue has vastly improved.
At the same time I will take measurements to see if I can lay the intercooler flat for better cooling.
Then I can get this retuned.
#619
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Thread Starter
I had another go at adjusting the lower outlet pipe as I felt that the clamps was not fitting properly. I also found that the clearance for the lower pipe between the chasis is very tight and noticed gouge marks on the pipe so added a silicon hose around the suspect area and some clamps. I also added a metal spacer to stop the rubbing as a remporary measure.
The other big issue is that the lower pipe does not line up properly with the outlet pipe from the compressor. The joint is positioned in a bend in the pipe which also makes it difficult to fit a good quality T bolt clamp. Therefore, I had to make sure I could get to two pipes as close together as possible. The best way to do this is to push the lower pipe up as this pipe has more flex while the top pipe is rigid.
This method will still see one end on the pipe touching one end and the lower part of the pipe will have a 2 inch gap.
I carefully lined up the clamps and managed to tighten it up to finally achieve a good seal.
The other big issue is that the lower pipe does not line up properly with the outlet pipe from the compressor. The joint is positioned in a bend in the pipe which also makes it difficult to fit a good quality T bolt clamp. Therefore, I had to make sure I could get to two pipes as close together as possible. The best way to do this is to push the lower pipe up as this pipe has more flex while the top pipe is rigid.
This method will still see one end on the pipe touching one end and the lower part of the pipe will have a 2 inch gap.
I carefully lined up the clamps and managed to tighten it up to finally achieve a good seal.
#620
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Thread Starter
Can anyone please confirm what the function of the metal vent pipe on the LIM does? (sits between the valves) In the standard car it vents to the intake.
In myset up it is hooked up to the oil filler tube via a catch can.
If it sees boost then i would like to add a one way check valve to that line.
https://www.rx8club.com/attachments/...116_124516.jpg
In myset up it is hooked up to the oil filler tube via a catch can.
If it sees boost then i would like to add a one way check valve to that line.
https://www.rx8club.com/attachments/...116_124516.jpg
#623
Driving my unreliable rx8
Those two little tubes Are the Jet air. I think they keep fuel from pooling on intake at idle. It sweeps it into the ports.
They do see boost. I have mine run to the intake manifold post boost. I'd go for a check valve at least. I think 9K has said he removes them or caps it.
They do see boost. I have mine run to the intake manifold post boost. I'd go for a check valve at least. I think 9K has said he removes them or caps it.
#624
rev it up
Thread Starter
Those two little tubes Are the Jet air. I think they keep fuel from pooling on intake at idle. It sweeps it into the ports.
They do see boost. I have mine run to the intake manifold post boost. I'd go for a check valve at least. I think 9K has said he removes them or caps it.
They do see boost. I have mine run to the intake manifold post boost. I'd go for a check valve at least. I think 9K has said he removes them or caps it.
Last edited by skc; 07-03-2015 at 11:28 PM.
#625
Driving my unreliable rx8
you can only see one? you do mean the little tube that runs out of the primary port at the bottom?
There is one on each primary port. They connect straight through to the one jet air line on the outside of the lim.
Last edited by logalinipoo; 07-03-2015 at 11:33 PM.