House's ITB XE build and re-build

[Benn]

Ha sounds like a very fun day!

[turbojolt]

I think it's easy to forget how much longer has been using his nova in anger and the shear amount of track days he has done in the car as well. He knows the thing inside out.


This engine build sounds awesome

[House]

I think it's easy to forget how much longer has been using his nova in anger and the shear amount of track days he has done in the car as well. He knows the thing inside out.


This engine build sounds awesome

Yeah!!! Doesn't mean I don't want to beat the big gay bear though!! hahaha

Engine build has been a long time coming, can't wait for it to be done.

Also thinking about suspension setup, everyone says higher poundage springs are the way forward but I disagree.

[BRoadGhost]

If you knife edged the crank along with balancing, ARP mains with doweling / girdle no reason why 9k couldn't be reliable

[RallyMarshal]

Thanks mate, rev limit will depend on the power curve when we map it. The balancing will be good enough for 10k but the crank wont do that, reading up on the cam info 4-8, I'm guessing somewhere at around 8250 but we'll see. It scares me revving that high so I'll not be going up there too often!! hahaha

The Astra engine is set to 8200 but thats partly because it was still being run in when mapped due to time constraints.

It made 227 flywheel and 177lb/ft - graph below.. Its an SBD 230kit on solids / TBs etc. Thats with std valves and a little hand porting. Yours should make more if the cam profile works well.



Paul..

[House]

Thanks for the info Paul, I would be over the moon with 230!! Anything more will be a nice little bonus!! So I'm encouraged to see that graph and hear the spec that produced it!!

Mr Ghost, I can knife edge the crank easily enough but with the cams listed 4-8 I don't know if 9 is needed!! I've also just bought brand new main cap bolts!!

Also what do you mean by girdle?!? A support for the main caps?!? Not heard of those before?!?

[BRoadGhost]

Cams can be listed in my instance (currently) 1500-6500; that didn't stop peak power being at over 8.5 ~ it's everything else that can characterise power curve. Climbing the revs is gonna come down to how well the harmonics can be regulated (failures aside only wear rates increase).

http://i265.photobucket.com/albums/i.../Photo0651.jpg

[House]

Yeah I get your point!! I'll speak to Darren tomorrow, I don't think we're balanced up yet so no extra work!!

And 9k is ok with a standard crank if we need to go that high?!?

Where can I get a girdle from?! Is it a standard part on something?!?

[Will F]

You shouldn't need to go near 9000 tbh - mine peaks at 8260 (ish - 244 bhp and 184lb/ft) and makes torque and power in the right places for where I need it.... Sure, if I fiddled about I could probably get it over 250 - but for reliability and driveability (some road use) it just doesn't make sense.

[House]

Thanks Will, what you've said mirrors the conversation I've just had on the phone with Jay. At the end of the day I want realiable solid power.

What basic spec gave you those figures?