211 replies to this topic

[Nev]

Let me know if you want a big power ZLEx engine, am keen to start another project... If you are putting fat wheels on you might be able to plant 500 ft/lb down on the tarmac.It would be fun to get 500 ft/lb out of 2 Litres at 8500 revs.... works out at approx 760 BHP.... EPIC ! BTW, where abouts in the country are you based please ? EDIT: Oh crap, just looked at the pics again and can see an NA exhaust pipe - please dont tell me its an NA ?!

Edited by Nev, 11 October 2011 - 07:16 PM.

[JimmyJamJerusalem]

Let me know if you want a big power ZLEx engine, am keen to start another project...

If you are putting fat wheels on you might be able to plant 500 ft/lb down on the tarmac.It would be fun to get 500 ft/lb out of 2 Litres at 8500 revs.... works out at approx 760 BHP.... EPIC !

BTW, where abouts in the country are you based please ?


EDIT: Oh crap, just looked at the pics again and can see an NA exhaust pipe - please dont tell me its an NA ?!

I've got a feeling the proposed engine in this will be more than sufficient Neville my man..... Not a smelly turbo in sight either.

[Nev]

What engine is he thinking of ?

[JimmyJamJerusalem]

What engine is he thinking of ?

I'll let the right honerable reverand drop the bomb on that one as I've only heard whispers and wouldn't want to pee on his parade.

[VX-GT]

What engine is he thinking of ?

Thanks for the offer nev

I don't think i'm in your league

the current configuration plan is

fairly tame destroked z20net/b207 with the turbo thrown away (so nev)

spec to follow

Edited by atom x, 11 October 2011 - 08:05 PM.

[slindborg]

That'll be atleast 10K rev limit then

[VX-GT]

stroke is 78mm mean piston speed will not exceed 25m/s work it out slindy

[slindborg]

stroke is 78mm

mean piston speed will not exceed 25m/s

work it out slindy

If the yank calculators are anything to go by thats just shy of 10Krpm depending on piston weights

[techieboy]

9615rpm?

[VX-GT]

9615rpm?

did you do that in your head?

I might go to 26.3m/s

this is a 30sec mental test for nerds

[techieboy]

Yep. 10,115 rpm Ermmmm, no I had to rely on the calculator I'm afraid.

[VX-GT]

on standard valve springs

[techieboy]

[Nev]

Am looking forward to seeing what power and torque this little rev monster can make without a turbo. Are you keeeping the B207 con rods presumably? Will you raise the SCR with a thinner HG ?

Edited by Nev, 13 October 2011 - 01:53 PM.

[siztenboots]

there is an alternative way to make more bangs per minute , and have a silly short 74.8mm stroke, 89mm bore and a much better noise Z2?NET

[VX-GT]

Am looking forward to seeing what power and torque this little rev monster can make without a turbo.

Are you keeeping the B207 con rods presumably?

Will you raise the SCR with a thinner HG ?

Changing the stroke entailed offset grinding the crank journals
altering Deck height too establish CR
Therefore I have had bespoke conrods made!

[VX-GT]

there is an alternative way to make more bangs per minute , and have a silly short 74.8mm stroke, 89mm bore and a much better noise Z2?NET

I dont understand please explain (I hope you don't lecture english)

[siztenboots]

there is an alternative way to make more bangs per minute , and have a silly short 74.8mm stroke, 89mm bore and a much better noise Z2?NET

I dont understand please explain (I hope you don't lecture english)

well 9615 rpm = 19230 bangs per minute in a 4 cylinder , whereas at 8000, with a i6 or v6 you've got 24000bpm and much less stress on everything

you either make bigger bangs or more of them

[Nev]

As I'm sure you know, it's always risky/scarey doing all your own proto-typing. I hope it all works out. What sort of power are you expecting? What ECU? If you've offset ground the crank rod journals doesn't that make your bigs ends rather weak due to the reduction of material?

Edited by Nev, 13 October 2011 - 02:47 PM.

[VX-GT]

As I'm sure you know, it's always risky/scarey doing all your own proto-typing. I hope it all works out.

What sort of power are you expecting? What ECU?

If you've offset ground the crank rod journals doesn't that make your bigs ends rather weak due to the reduction of material?

Ecu is a dta s60

its only N/A so the big ends should be fine

the engine used by 888 for BTCC had reduced bigend journals (retained standard stroke) to reduce friction!
Good for 300bhp 200ft/lbs