engine spec

[karlj]

would this spec be safe for turboing?
GA15de throttle body
SR20det fuel rail, injectors and regulator
256/8 cams
CGA3 crank with CG13 con rods and CG10 pistons

 

[frank]

that would be a lot of compression karl (the pistons would hit the head)

 

[karlj]

ah balls, what would you suggest frank

 

[frank]

the post 2000 (coilpack 1.0 and 1.4) have a very thin top ringland karl (between the crown and 1st ring) which would fail when boosted (left is the 1.0 and right is the 1.4, middle is the thicker 1.3)
so that leaves you with either 1.3 or forged pistons eh

http://www.micra.org.uk/attachment.php?attachmentid=17888&stc=1&d=1290986629

 

[karlj]

ahh ok so stick with 1.3 pistons, would the cga crankshaft be a good idea in a cg bottom or won't it fit?

(don't mind me sounding like an idiot... i am)

 

[Liio]

What sort of boost you thinking of running Karl, will you be maching the pistons down mate

 

[Eliot]

Karl you best get yourself down the drag-strip in 2011!

 

[karlj]

@liio no won't be machining the pistons as for boost it'll be 7psi or lower only have a tiny hairdryer but I'm not looking for massive boost

@Elliot don't worry I will but the turbo ain't going on for a while yet still have a few bits and bobs to get, and I want to sort chassis out first.... stiffen, lower, arbs all round. Then there's braking, I want to stop faster than I accelerate.

Which reminds me I really must fit my lightened flywheel

 

[Scott]

If your only going for relatively low boost then juststick with 1.3 pistons :grinning:

 

[Liio]

@liio no won't be machining the pistons as for boost it'll be 7psi or lower only have a tiny hairdryer but I'm not looking for massive boost

@Elliot don't worry I will but the turbo ain't going on for a while yet still have a few bits and bobs to get, and I want to sort chassis out first.... stiffen, lower, arbs all round. Then there's braking, I want to stop faster than I accelerate.

Which reminds me I really must fit my lightened flywheel

Lightened flywheel makes so much difference to the pick up of the revs, one of the cheapest and most affective mods out there. If your only going low boost then theres no need, what charger you using mate a T2 ??

 

[karlj]

Better do paid a small fortune for it 2.66kg of engineering beauty and I'm using a hitachi ht07 unless someone has a t2 they wish to donate

 

[Liio]

Better do paid a small fortune for it 2.66kg of engineering beauty and I'm using a hitachi ht07 unless someone has a t2 they wish to donate

I meant cheap by having your standard flywheel lightened not bought haa

 

[karlj]

Look on eBay for k11 autograss they're on there BUT I didn't pay that price, just need to get a new updated clutch first

 

[frank]

If your only going for relatively low boost then juststick with 1.3 pistons :grinning:

+1 and the CGA has a bit more throw karl (longer stroke) but uses the same 1.3 rods, so using a CGA crank would make 1.0 or 1.3 pistons protrude past the top of the block

 

[Stani1029]

Standard engine, 2 headgaskets 1 bar of boost! For the win