1497 replies to this topic

[Graeme Lambert]

Congratulations Nick. Glad to see/hear it has finally come to fruition (with more to come by the sounds of it as well). Looking forward (and maybe experience a pax ride at BEDS meet in the future) - maybe wait til it's dry though eh? G

[NickB787]

Excelent. You should be more or less spot on 380 BHP (according to my calcs) if they raise the revs another 400 RPM.

I can't imagine you need more than 380 BHP on a track unless you are up against a Radical or a some huge powered vehicle or unless it has huge straights and sweeping curves like the Nurburg ring.

Be interesting though to try the 25psi from the 20psi pulley

[The Batman]

More torque Is it wrong to now want to get my cylinder liners done?

[NickB787]

More torque

Is it wrong to now want to get my cylinder liners done?

400bhp for oem but think they can go higher,

start searching Joe, share my pain £££

Edited by NickB777, 02 November 2011 - 09:58 PM.

[Nev]

Whats your total spend been Nick, when you take everything into account, rework, parts, labour, taxes, etc etc ? Would be interesting to know. PM me if you dont want to go public with it.

[NickB787]

Nev when its all back on the road and sorted I will then work out how many vx's I could have brought with what it has cost me I will also Pm it (the wife has access to this site you know)

[Nev]

Pioneering is very expensive for sure and full of pitfalls. Hopefully your car will be nice and reliable now and will slowly redeem it's expense over the forth coming track days. I find that now that I have spent so much money, emotion and time on my car that I am fearful of crashing it, which probably makes me an over cautious driver (on the road anyway). I have a friend who says your track car should never be worth more and a few thousand pounds, that way you never fear crashing it and drive it upto (and over) the limit - he has a point I think ! Let us know the final dyno output )

[JG]

That's an attitude thing Nev. If you go to a track day with the mentality of having to be the fastest and always needing to be on the limit, then yes, you probably shouldn't have a car you care about too much. If you treat them like a no limits fast road day, then the risk imo is fairly low. Of course both ethos are fine, I'm in the second catergory and get out of the way of those in the first. I reserve the no care if i crash racing to c100 karting

[Muncher]

Good news Nick

[NickB787]

cheers all for the comments Yea I know I will be a tiny bit careful when I take her out for the first time and definitely on track suppose. I just have to try to put the cost out of my mind, if possible trying to get through to Jon now to see where we proceed. you you think 7200rpm will be a good every day limit without killing the engine too much I really want it to last rather than have 3 months of fun.

Edited by NickB777, 03 November 2011 - 10:02 AM.

[Exmantaa]

Was re-reading your thread(s) for the full engine spec. Is this still correct?

The engine is a 2.2 with:
- Steel Rods
- 8.9 Wiseco pistons (which headgasket did you use?)
- Deleted Balancer Shafts
- Modified Head
- Comp SC Cams (timed correctly....)
- 470cc injector
- complete with an awesome 3" 2bular system
- Manifold is a 4 into 1 design with 2" primaries.

Management:
- Z20LET ecu
- No MAF sensor
- No CAM angle sensor??
- Porsche (....mm?) TB


7200 seems pretty conservative with Supertech springs fitted. You have balancer delete, so go for that 7500rpm limit .

(And I'm very curious to what inlet temps they saw on the Dyno... Can you ask them?)

[Winstar]

[/i]7200 seems pretty conservative with Supertech springs fitted. You have balancer delete, so go for that 7500rpm limit .

(And I'm very curious to what inlet temps they saw on the Dyno... Can you ask them?)

I'd say so in terms of the capability/durability of the engine components, although it does depend on if the Harrop can overcome the restriction of the OEM inlet manifold to make it worth mapping higher rpm. Plus there is always the question of whether the 400bhp liner limit is with or without power absorbed by the SC!

Edited by Winstar, 03 November 2011 - 10:33 AM.

[siztenboots]

be greedy and take the torque lower down , the gearbox won't be all that happy at high rpm , plus you will only get much higher frictional losses on everything else. By all means have a high red line for holding partial throttle on a corner, but I would deliberately tail off the torque delivered up that high.

[NickB787]

Was re-reading your thread(s) for the full engine spec. Is this still correct?

The engine is a 2.2 with:
- Steel Rods Eagle
- 8.9 Wiseco pistons (which headgasket did you use?) oem
- Deleted Balancer Shafts Zero Level delete Kit although I think the Vocky hammer method is just as good
- Modified Head Self ported z22se
- Comp SC Cams (timed correctly....)
- 470cc injector
- complete with an awesome 3" 2bular system
- Manifold is a 4 into 1 design with 2" primaries. Think they were not full 2"

Management:
- Z20LET ecu
- No MAF sensor 80mm Maf also map sensor, with a bit of modding
- No CAM angle sensor?? Written out of the ecu
- Porsche (....mm?) TB 68mm as close as I can tell



7200 seems pretty conservative with Supertech springs fitted. You have balancer delete, so go for that 7500rpm limit .

(And I'm very curious to what inlet temps they saw on the Dyno... Can you ask them?) Will do

I'd say so in terms of the capability/durability of the engine components, although it does depend on if the Harrop can overcome the restriction of the OEM inlet manifold to make it worth mapping higher rpm. Plus there is always the question of whether the 400bhp liner limit is with or without power absorbed by the SC!

If I recall there was a discussion about the liners being good for 400 turbo high torque use.
should be good for this thing

[NickB787]

am looking at changing too a 6 speed box Hope it will take the torque better

[The Batman]

Copy cat

[Exmantaa]

Was re-reading your thread(s) for the full engine spec. Is this still correct?

The engine is a 2.2 with:
- Steel Rods Eagle
- 8.9 Wiseco pistons (which headgasket did you use?) oem
- Deleted Balancer Shafts Zero Level delete Kit although I think the Vocky hammer method is just as good
- Modified Head Self ported z22se
- Comp SC Cams (timed correctly....)
- 470cc injector
- complete with an awesome 3" 2bular system
- Manifold is a 4 into 1 design with 2" primaries. Think they were not full 2"

Management:
- Z20LET ecu
- No MAF sensor 80mm Maf also map sensor, with a bit of modding
- No CAM angle sensor?? Written out of the ecu
- Porsche (....mm?) TB 68mm as close as I can tell



7200 seems pretty conservative with Supertech springs fitted. You have balancer delete, so go for that 7500rpm limit .

(And I'm very curious to what inlet temps they saw on the Dyno... Can you ask them?) Will do

If I recall there was a discussion about the liners being good for 400 turbo high torque use.
should be good for this thing

Ah, interesting that they still use the MAF on your engine.
I'm running my 2.0 with the LSJ ecu and that also has a (3") MAF sensor and the std LSJ's 68mm SC TB, but I have a cam sensor too.
(Currently in the process of fine tuning my MAF calibration curve for part throttle cruising (14.7AFR) and full power mode (~11.8 AFR), but I already saw 51°C max air inlet temp in some WOT logs. A little higher and my ecu starts retarding ignition...)

[rob999]

Good news so far Nick, when does Jon aim to be finished?

[NickB787]

The last set of figures to come out were 377bhp and 304lbs at 7300rpm on an 80mm pulley. Temp in the dyno area was about 20 C. Think i will leave it at that, peak power was about 7300rpm, inlet temp reached 60C so realistically if I want more than say 390bhp I would be into some extra cooling of the intake manifold itself as even extra coolant capacity would just delay the inevitable. Mapping was MUCH easier with the z20let ecu my 470cc injectors worked fine and weren't maxed running 4.5 bar so all in all VERY please, well done Courtenay :

[The Batman]

Awesome news! Are 470cc injectors bigger than VXR ones confused now! Worrying intake temps though! That will be something for me to tinker with this weekend