[image]http://www.nyssaracing.com/562.jpg[/image]

Expect to be able to drag the torque curve up at lower revs, but Mark at owen wants to mod the map from a data log rather than try to set it on the rollers to make sure its right in the real world

Top end could still be improved, but told him I didn't want to map past 8000 rpm - power was still going up

All this at 1.4 bar through GT30 with external wastegate

excellent figure!

surely not still a 2 litre?

<img src="/forum/images/graemlins/cool.gif" alt="" />

Link to image here

WOW <img src="/forum/images/graemlins/crazy.gif" alt="" /> thats excellant. <img src="/forum/images/graemlins/laugh.gif" alt="" />

What sort of mods have create those figures?! <img src="/forum/images/graemlins/shocked.gif" alt="" />

Wow!.. Spill the beans then nyssa! Is this the cyprus engine? - thought last time it was mapped at around ~400bhp

Chris

It is the "Cyprus" engine, but running GT30 rather than the Greddy/Trust thing it had the other week at Santa Pod (that was well f****d)

It is a 2.0 still, got all the internals, plus a few other internal mods to strengthen the bottom end. Wild bespoke cams that were set up to be "less wild", not that it shows

Head has been worked on, tubular manifold is a little bigger than my old one, but with take off for the external wastegate

Maybe someone thought to take a picture at Gaydon? I didn't have my camera with me

What is really scary is we could have gone higher if we'd revved it further

Great results but looks well laggy.

Looks good, What are you aiming for in terms of bhp?

how can you tell that from a graph? don't confuse lack of torque with lack of response (lag)

To be fair, I don't know yet, haven't driven it. That comes on Sunday when we take it to Millbrook and see what its like. Might be a bit laggy, might not, just not sure how you think you can tell from a graph

As in the first post, we will get the boost to come in earlier, that's a function of boost control at the moment, not anything to do with the turbo not being able to spool up. Once we've got some "real" data, we'll modify the map to boost up earlier

hmmmm only 460 at the wheels,.. now come on Trevor <img src="/forum/images/graemlins/crazy.gif" alt="" /> <img src="/forum/images/graemlins/laugh.gif" alt="" />

Looking at the curve, another 20 or more bhp would be available if you could rev any higher!!

LOL, I think this curve now render 1st to 4th gears uselss!! <img src="/forum/images/graemlins/shocked.gif" alt="" /> <img src="/forum/images/graemlins/laugh.gif" alt="" />

good job btw <img src="/forum/images/graemlins/cool.gif" alt="" />

Joe

Well you’re right you can’t really tell by the map but I’m going by instinct. Nigel runs the smaller turbo (GT2871R) on his 2 litre and that is ‘laggy’ so an even bigger turbo should have more lag. I know that’s not always the case but all you power looks very high up the higher end of the rev range so ur gonna suffer lower down unless u got a hybrid/anti-lag/supercharger up your sleeve <img src="/forum/images/graemlins/smile.gif" alt="" />. I think that engine is phenomenal but my opinion is that it will be laggy but good luck and hope you get the results you want.

Bloody hell - thats a serious amount of power - fancy lending me the engine for next years TOTB <img src="/forum/images/graemlins/wink.gif" alt="" />

It would be interesting to know if its could be used on the road - its a pretty big turbo and the only things I can think of that could decrease the lag would be pretty wild cams or high compression ratios - both of which would work on a race engine

I had quiet hopes that on Saturday, with a bit of luck and a cold day, I could have become the most powerful non-nitroused 2 litre Coupe. I'll just have to put up with adding "on the road" at the end of that statement.

Well done though - great achievement - surely you're a race winner with that lump?

Mark explained to me that power at wheels figure reads low partly because of the speed of the run, partly because I'm running big negative camber that cuts the contact patch. Doesn't do the slicks any favours either, learned a couple of years back only to go to the rollers with old slicks on the front and bin them afterwards

I'm as stunned as the next guy on the final figure - never seen Mark look like that either

Still won't win races, need to get round corners to do that! She's not exactly crap round corners, but its all relative - the Super Tourers I race against might as well be F1 cars with the suspension and wind tunnel tested aero systems they have. Cornering speed on those is something else

But I'm looking forward to scaring them down the straights <img src="/forum/images/graemlins/cool.gif" alt="" />

It wouldn't fit! Now its tempting to swap it into one of my spare kappas but I'd probably shred the gearbox on the first run, and those who were at Santa Pod already know I have no clue as to how to get off the line

heheee, I've been on track when touring cars have been going round, and those cars just handle and grip so well. With 300bhp, a tuned Coupe can keep with them (just) on the straights, but when you have to lift off, they don't! <img src="/forum/images/graemlins/crazy.gif" alt="" /> <img src="/forum/images/graemlins/shocked.gif" alt="" /> <img src="/forum/images/graemlins/laugh.gif" alt="" />

Still with your amount of power, you could stick some huge spoilers, and air dams on your car and still be quicker than them along the straights!

Joe

Trevor, thats an awesome figure!! <img src="/forum/images/graemlins/laugh.gif" alt="" /> I loved the fact that Rich called me to say guess what, thinking he was telling me ground breaking news, lol <img src="/forum/images/graemlins/laugh.gif" alt="" />

Only thing that im really surprised at is the GT30 flowing 560bhp! <img src="/forum/images/graemlins/shocked.gif" alt="" /> I thought it was only meant to be rated to about 470 - 500bhp, but just goes to show compressor maps don't always tell the thruth, it also pleasing to see that i wont need to think about the GT35R and just go and get a GT30R <img src="/forum/images/graemlins/smile.gif" alt="" /> What housing you running?

Excellent results there <img src="/forum/images/graemlins/laugh.gif" alt="" />

The power at the wheels is relatively low because the higher RPM you make your power the greater the flywheel-to-wheel losses are.

Begbie - it could quite easily be a GT30 with a different trim compressor wheel. It's quite common to do that as a hybrid and is still a GT30 in the same way the GT35/42 is still a GT35.

doh, didnt know it was posted Beggars <img src="/forum/images/graemlins/crazy.gif" alt="" />

Lag on the car is also a function of weight and gearing turboj, the kappa has lower gearing and carbon doors bonnet boot etc, thus was seems like a period of little action on a graph - in a rolling car actually represents a small time frame for the engine to go through this range if it is light and the gearing is lower.

Good luck trev, hold on tight.

rich

I've got some pics at home, close up of turbo / straight induction since it was so huge, plus general shot of the front with bonnet off, will try to post up tonite <img src="/forum/images/graemlins/smile.gif" alt="" />

maybe we should have a race next time ur at santa pod!!!!..... <img src="/forum/images/graemlins/smirk.gif" alt="" />

race fuel vs nitrous <img src="/forum/images/graemlins/smirk.gif" alt="" />

maybe i might have a challenge this time <img src="/forum/images/graemlins/wink.gif" alt="" />

Markus - I wouldn't mind going against you at the Pod

I've managed a 13.0 @ 117 on concrete at TOTB, I was actually going for the top speed run at the time, so wasn't actually concentrating on getting a decent quarter time. I was on Toyos at 40psi as well

I'm convinced I can break into the 12s - just not sure how much by

Awesome Trevor - well done. I hope you are happy with the way the car drives on track! <img src="/forum/images/graemlins/laugh.gif" alt="" />

I might have to come out of tuning retirement and give you all a run for your money <img src="/forum/images/graemlins/wink.gif" alt="" /> <img src="/forum/images/graemlins/laugh.gif" alt="" />

I would John - your car's dead slow nowadays.... <img src="/forum/images/graemlins/tongue.gif" alt="" />

Looking good Trevor <img src="/forum/images/graemlins/shocked.gif" alt="" />!

Phil

Housing says .7 on the side if that's any help (I am really am useless mechanically)

Now hurry up and make 600 you bunch of lazy fccuckers <img src="/forum/images/graemlins/laugh.gif" alt="" />

Think we could do if we went to 8500! Maybe next year if I can be convinced the bottom end will take it

here are the pics

pic1
pic2
pic3

the 0.7 is the compressor cover on your turbo - it is a T04S 0.70 A/R compressor cover. It's the compressor wheel which will determine whether it's a hybrid or standard Garrett unit.
The problem with going over 8000rpm (or whatever the limit is) is that the hydraulic lifters are not designed to go over that so you might either find that the valves do not close in a timely enough manner (that can lead to valves burning out), bounce slightly on closing (again can cause them to burn out as well as loss of power) or the lifters will lock out leading to the valves clashing with the pistons. The problem with them is quite common on the VAG 1.8T engine with less than 8k rpm so who knows where we might see a problem.