Almera TSi

Sam said:
does it run?
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Of course!

Im seeing full boost sooner and feels more responsive at low rpm off boost. I may have sacrifised a few HP top end, although its hard to tell to be honest. The main reason for the swap was cosmetic, the B13 I.M helps fill the engine bay!:lol:
 
well mixed emotions here

sad i never got it running, bud damn happy you got it running :D

good stuff mate, it couldnt have gone to a better person
 
Love it, that's awesome Dale. Like Ross says looks like it's in good hands here :)
 
See, even my old tatty white paint can shine!:lol:

After a good scrub down, SRP polish, Zymol wax and Nano Tech Tyre Gel:

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Dale said:
Well, this weekend i tried the stock cams, with poor results.

I should also report that i have switched back to the big intercooler.
Why?
Well, i didnt get any benefit in terms of decreased lag and annoyingly the new one was causing a restriction in the system and didnt flow enough - it was making what can only be described as a whining type noise from forcing 18psi of boost through it. The other indication was how it eliminated my compressor surge/reversion... which can only indicate towards less flow. With the big intercooler i was getting reversion. Reversion is bad but at least proves that the intake was flowing too much for the engine to consume.

Waste of money that intercooler was... LIVE AND LEARN

So anyway, im back with the JWT S1 Turbo Cams and big intercooler.
I spent the whole weekend tweaking the cam timing and im pleased to say ive got it nailed down now. I widened the lobe separation(retarded intake/advanced exhaust) even further using modified cam sprockets, and the results are very pleasing, eliminating reversion completely, allowing me to put down 1BAR of boost at 4000rpm (old dyno printout boost was 0.65BAR@4K ) and peaking out at 1.2BAR (old dyno was 1BAR@redline).

Im keen to get it back on the drag strip just to see the difference on paper. Its definately quicker now, i just hope its enough to see me into the 13's.

I'd like to re-dyno it, but recent results from other members and dicscussion on accuracy almost puts me off. I may go and see Ed@fusion again, just to see if theres anything to gain from a re-tune.

As it stands with 18psi its fuelling at high 10's, so there might be a few HP to pinch.
If i had to guess, id say ive gained 30ftlbs between 4-5krpm, and maybe a few extra HP top end.

Erm, Thanks for reading my drivel. :lol:
Stay tuned!
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Great result Dale - one of my favourite AOC cars :)
 
God knows Dave, i guessed. I dont have the equipment to dial them in, my sprockets are just elongated on the dowel pin holes to allow adjustment.

We're only talking a few degrees on each cam though.

Those cam timing changes were prior to the b13 intake manifold swap,the B13 intake manifold has induced bad compressor surge again at 18psi...i cant be arsed to keep faffing around though. So ive knocked the boost back to a BAR and im getting very minimal surge now which i can live with.

I feel ive pretty much maxxed this setup out.
Maybe a RR session to play with the settings would yeild some better results, but i cant seem to shake off the surge.

Ultimately, the best solution is a larger turbo/less restictive turbine housing.

BUT, it can wait, i want to get out on track this year.
Spend less time building and more time driving!
 
when the engine is in the car, i always use a dipstick down the plughole to check the valve timing dale, and measure the piston height in the bore (using a 3 thou feeler in the valve clearance to catch the valve event, turning clockwise only) :)

frank
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I love your genius Frank, but i dont understand that one :roll:?
How wil that tell me the degrees?
 
Dale said:
I love your genius Frank, but i dont understand that one :roll:?
How wil that tell me the degrees?
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its probably possible.

exhaust opens 6mm bbdc. so that 6mm is a percentage of your stroke i think. so 8% of 76 for arguements sake. so 8% of 180 degrees (one full stroke of the piston is 180* yeah?) is 14.4* bbdc.

this is theoretical. its probly more complicated than that lol

just realised that the GA stroke is 86 so my figures arent accurate above...
 
I'm guessing it won't tell you the precise degrees Dale, I think Frank's suggesting you can find out exactly when the valves are opening/closing, and determine if they are doing so at the correct time or not, (you can see he's got too late written on the right).
Frank you are a mechanical crack head mate...
Joe
 
RAJackson said:
its probably possible.

exhaust opens 6mm bbdc. so that 6mm is a percentage of your stroke i think. so 8% of 76 for arguements sake. so 8% of 180 degrees (one full stroke of the piston is 180* yeah?) is 14.4* bbdc.

this is theoretical. its probly more complicated than that lol

just realised that the GA stroke is 86 so my figures arent accurate above...
Click to expand...

Woah, lay off the ganja:thumb:

One full stroke of the crank (and pistons) is 360*
Camshafts rotate once for every 720* rotation of the crank.




shaggy_master said:
I'm guessing it won't tell you the precise degrees Dale, I think Frank's suggesting you can find out exactly when the valves are opening/closing, and determine if they are doing so at the correct time or not, (you can see he's got too late written on the right).
Frank you are a mechanical crack head mate...
Joe
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I figured as much, but knowing frank i thought he was suggesting i could measure degrees with a dipstick and a feeler gauge!:lol:
 
i meant one strok from tdc to bdc is 180 degrees of the crank rotation.

ah well. seemed logical in my head. see why i count bricks for a living?
 
lol i know joe :lol: it will give you some idea of how much overlap you are running dale tho eh, and to crosscheck your lsa, chainstretch, centerline and stuff :)

frank
 
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