Recent content by exupturbo

http://www.aquamist.co.uk/phpBB2/ Some good info here. Mark <!--EDIT|exupturbo Reason for Edit: None given...|1117365787 -->

Yes Bob, I went for Megasquirt in the end. http://bgsoflex.com/megasquirt.html I cheated and bought a ready built Megasquirt 2 and will be triggering it from the tacho signal keeping the original ignition system. Mark

I've been a busy boy over the winter and have nearly completed FI setup. 38mm carbs V 46 mm GSXR750 throttle bodies. Exup inlet stubs modified to take GSXR rubbers Billet housing for 3 bar Escort Cosworth FPR assembled end body modified to take GM TPS re-spaced bodies with...

It looks like the 5 Valve Genesis engine in super sensitive to any changes to intake and exhaust. The dynojet instructions are quite clear about removal of float bowl vent tubes which is a bit of a pain when turbocharging. I'm now 90% sure the over rich running is caused by the tiny amount of...

OK, i don't know if I have any main jets smaller than 120 though but I will give it a try. Back to work now for another 5 1/2 days so no progress reports 'till Saturday evening UK time. Cheers Mark

The area under the cooler is normally sealed from any hot air rising from the engine and is fed by the two chrome pipes that originally fed cold air to the air box. The main jet is not meant to have much effect at lower rpm and below 4000rpm there is no boost showing on the gauge, stock carbs...

I'll second that   Pic of plenum/intercooler in place Pic of underside of plenum. Pitot take off point Close up of pitot tube temporary plumbing of pitot to  float bowl vents Any ideas? thanks again for your patience Mark

IHI RHB 52 with R-20 exhaust housing and bigger compresor wheel. Compressor map. Mark

The fact that the end of the clear plastic tube was not sealed would proberly explain the wierd fuel height thing, but the fact still remains as soon as I plumb in the pitot tube fueling goes rich, fuel pressure has been checked and set at 2.5 psi above boost and does not change whilst bliping...

I'll try and take some pics ASAP. By plenum I mean the part that the carbs breath from and the turbo blows in to. The flow from the pitot is hardly enough to feel against your face with the plenum removed. I fitted a piece of clear plastic tube to the float bowl drain and taped it to the carb...

FPR is referenced from the plenum, the original boost signal to the float bowls was also referenced from the plenum and I had the same problem. The pitot tube is mounted in the boost pipe before the plenum and the tiny amount of air flowing through it without the plenum fitted is enough to upset...

I've tried with stock needles, dynojet needles, infinate numbers of turns on the idle mixture screws, all sizes of air corrector jets,stage 3 bungs/no stage 3 bungs, stock main jets all the way to 180 main jets, stock slides and modified slides. It seems that as soon as the carbs see even a...

When I say without turbo stuff I mean just the carbs with no filters or airbox, it runs fine like this with either dynojetted carbs or stock ones. As soon as I plumb in the float bowl lines it overfuels and splutters like crazy at low revs. Fuel pressure is set 2.5psi above boost. Mark

I bought another set of totaly stock carbs, fitted them to the bike without any of the turbo stuff connected and it was fine. When I connected all the turbo stuff back up it ran exactly the same as my old setup even though I now have a pitot tube to pressurise the float bowls, as soon as...

Hi Bob, What did you use for the pitot tube, pipe dia etc? Thanks Mark