I've had an S2000 engine, bought with 15k miles from Automailorder (AMOS), fitted by Quantum into a new factory-built Quantum Xtreme and fitted with an Omex engine management system. Omex have been developing the map both on site at the Quantum factory and now at Omex in Cheltenham. They tell me that they have already done this successfully with another s2000 engine. They are only able to get 135 bhp at the wheels from my car and are telling me there is a problem with the engine and possibly also the gearbox. Unfortunately they can provide no real evidence of where the problem lies and so I am unable to justify returning the engine to AMOS.

I need to find a garage or specialist who knows the Honda S2000 engine well and who can find out whether or not the engine is faulty. Any suggestions?

 

Yeah, they aren't getting the VTEC to actuate - sounds about the right numbers.

 

Should be ~190 WHP stock
Why did they not just stay with the honda loom and ECU?
Issue with the gearbox on what basis!

 

Omex took the cam cover off, I believe to check the timing. They tell me that they found Tipex marks on the cams and that the ignition was 15deg retarded. What might that indicate, if accurate?

Quantum and Omex encouraged me to go for the Omex management system. I got the impression that more power would be achieved and also I understood that re-mapping was necessary in any event to cater for the different exhaust system. Omex were also going to bring in the VTEC system at around 4000 rpm as opposed to the standard 5800 rpm or thereabouts, which appealed to me greatly.

The gearbox question now sounds like it was a bit of a kneejerk reaction from Omex when they failed to get the power expected. They suggested that there was bearing noise causing power loss. Subsequently they questioned the engine.

It's all very unsatisfactory, which is why I want to locate someone who can examine the engine properly and give me some exact analysis.

 

TTS in Silverstone?

Richard Albans (HORSEPOWER on S2ki) has now worked on a number of S2000 engines in both S2000s and kit cars.

 

the responses and justifications from Quantum/Omex suggest they are not familiar with the F20C.
It does sound like someone has messed with the timing though!

 

Sounds like a load of crap, you cant adjust static ignition timing on these engeines like you could on the old Type R VTEC engines via adjusting the distributor.

For a start F20Cs dont have a distributor!

 

They'll tell you a lot of things if their mapping isn't making any power.

I wouldn't believe a word they tell you.

For a start, remapping won't liberate much, if any more bhp - 240 at the flywheel is about as far as the engine will go without forced induction. Very, very few non-race engines make 120bhp/litre out of the box, Omex couldn't do much more than Honda already did.

I'd be tempted, once you establish that the engine is fine, to tell Omex to shove their map where the sun don't shine, and Quantum to find someone who can set the F20C up correctly, with a stock ECU and not to come back until the car makes the proper whp.

If Quantum insist on an aftermarket ECU, I would suggest Emerald, what Dave Walker doesn't know about engines isn't wort knowing.

 

Your not really going to get a benefit from the vtec kicking in earlier, its sound good in theory but its isnt.

IIRC you wont net any better performance, thats why spoon etc have it kicking in at 5800-6000rpm. IIRC there are problems with vtec engaging at far lower revs.

Also a caterham where we lived had a S engine dropped in and he only managed 201WHP on a standard engine and that was with a standalone ECU (Emerald) and a slightly abeit crap exhaust. IIRC the VTEC was only dropped a bit too. Constrast to the we had a integra with different cams and the vtec was dropped to around 4.5 rpm and netted 30bhp but its a different kettle of fish to the S

Tipex mark, someones been messign with it, I think and i think its so they can tell what to go back to.

Its seems Quatum should of done there homework.

Remember the S is so highly tuned to begin with, i can vouch for this because i recently tuned mine different manifold ECU etc, so have others and here.

Good luck

 

I went looking for this one day and then realised why i couldnt find.