Discussion in 'Members Rides' started by Dale, Sep 18, 2009.
I expected more from the pistons, they will be coming out of mine.
Yeah i must admit the findings have been dissapointing. I expected more from the Autech full stop, its just a regular DE but with a head skim, notched pistons and uprated cams.
sodium filled valves
high comp pistons
It has none of those...
At least now the 'Autech spec' rumours can be abolished and we have some factual information.
On the plus side, it gives me greater confidence in the new cylinder head in terms of gains.
I certainly dont feel so bad about pulling things out of mine now
good work man,
might be more to do with the mapping with the cam setup
So are those just notched 10:1 pistons?...they certainly look different to 16VE ones. Why notched?
Looks nice and clean in there anyway. Good luck with the build.
I'm guessing they are notched for clearance reasons because of the headskim and larger cam profile.
Hardly a huge skim and massive cam tho! OTT to me.
Well you never know.... The Autech pistons could have a higher deck height, or the block deck height could be lower... If there's a smaller piston to head clearance, the valve notches would be needed obviously.
you need to put the autech pistons next to some satndard UK RR pistons and see if they are taller..
Forgive if im missing something, but all i needed to do is measure the piston deck clearance.
If the autech piston had a taller compression height, or had the deck of the block shaved, the piston deck clearance would be less than a normal DE @ 0.5mm....which it isnt.
I think this engine is alot more common than previously thought, especially now its known that it has minimal differences to a standard highport. I would say those South African N14 Sunny's with the claimed 180bhp are using the same engine
Well since the strip down ive spent a few hours cleaning up the original highport intake manifold.
I have port matched the runners to the head and polished up the plenum entrance and bellmouths.
Its also had the mandatory lick of silver paint.
Im sure these small changes wont make any difference, but they cant hurt:wacko: Keeps me busy while i try to save some funds for new parts.
Good stuff Dale - as you said it can't do any harm
every little extra helps in the NA game dale, nice one
Good progress Dale... I look forward to you completing this project!
Looking great there Dale, some fantastic work you've put into it.
Good work mate :thumb:
Which car you taking to shakeys?
I'll be in the TSi Ed, trying for a high 13.
Autech's a little while away yet Shame really, not enough time and money.
Got most the parts now, should be some updates very soon.
No that's great I want to see the TSi in action . Movement against the SR20!!! :lol:
Everything's looking just great Dale. Very impressed by the BTCC head after having a look around it.
You've got your head screwed on so I'm sure you'll make the most of this build's potential.
Time to invest in a dial gauge and other tech cam timing adjustment gear boyo!!
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