Almera TSi

Well done ol pal. I use to hate re shimming heads back in the day, I always went the wrong way when needing to make the gaps smaller lol

Also good move with the RC
dd
 
Small Update

Recent compression test results:

1) 110
2)115
3)115
4)120

With the low comp motor, i just though sod it, lets stop fannying about...might aswell boost the shit out of it and make proper use of the potential with this low C.R.
Im now happily running the car at 18psi/1.2BAR

Ive also switched to a better sized intercooler, as the old one is just too big for my application.

OLD and NEW:
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Trying to squeeze what i can from the setup i have, i felt i was wasting away response and top end power with such a big intercooler...making the turbo work harder than it needed to.

Another upside with the space created is better airflow/cooling to the radiator.

Ive contemplated fitting the standard cams back in, as i know these JWT's are killing my low down power/response with overlap and low dynamic compression, but the big trade off with fitting the stock cams will be loss of top end power.

Part of me wants the response and low down torque (which is great for an everyday road car), but another part of me doesnt want to loose the top end power for the sake of better driveability. So for now im keeping the S1 cams. Ive tried messing and advancing the intake cam gives me more low/midrange...but also causes reversion and compressor surge. Im currently settled on running a retarded intake cam and advanced exhaust to reduce overlap, but i like to pick up some more responce from somewhere.

Im never satisfied, so i'll keep tinkering...maybe i'll try the stock cams out and see how the butt dyno feels about it.
 
Won't you have to get a re-map if you swap the cams back? My cams are on 2.5+ on the inlet and i'm dying to put them back to standard but daren't due to the thought of fucking the map up.
 
As long as your fuelling is good uptop i dont see any problem. Although id reccomend either getting it done while on a dyno session (so you can monitor fuelling) or get yourself a wideband lambda sensor.

Having a wideband Sensor gives me lots of confidence for tinkering, since i can see whats going on.
 
dale you could have reduced the reversion with a tubular manifold instead of the log style one you got, also a bigger turbine housing but that would give you more lag of course, theres a happy medium in there somewhere mate and i think your at it personally. nice one :thumb:
 
Looks like a nice setup Dale. I may have gone slightly bigger but I can see that it's going to be an improvement over the huge IC anyway.
 
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!
 
dale, if you ever wanna replace your cams to keep your low down power and top end pull i recommend getting geoff at autosprint to hook you up.

the lobes are still sharp peaks, which i am reliably informed let you keep your low down torque whilst still benefiting from the increase lift up top.

maybe worth a chat with him.

your box is getting collected tommorow, will be with you tuesday buddy ;)
 
Im glad your on the ball Ross, your package will be going out tuesday, i need to find something to wrap it in!

I think the trouble with my setup is that the turbo is undersized AND im overcammed.

A good crack would be to switch to a VCT Head and system, allowing you to run 20* intake advance in the low rpm and then switching it off (retarding) in the mid/high rpm. This would make for some nice low down torque without sacrificing top end horsepower.

I guess i can live with the lack of low down torque, its the higher RPM that counts when you are pushing on anyway.
 
good to hear youve found the gains dale.

am i feeling an upgraded turbo in the future?

looking at the compression reading im not suprised it can easily take the boost, i did compression tests on my 1.4 sunny at the weekend and they were 190psi at 9.5:1!
 
Shame about the intercooler, i noticed a nice change in mine when i halved the size of what you're back to running. Must be my wee 7psi.

Are you running an oil cooler? If so, how many rows? I've got a massive oil cooler but i've changed my mind about using it, i think the oil will never get warm if i used it.
 
Good call, but no i havent installed an oil cooler yet, im running Silkolene 10-50w for the meantime.

I will need an cooler if i start doing track work. I feel even long motorway journeys of 4000rpm are quite punishing on the oil.
A big oil cooler should be fine, id just use a MOCAL thermostatic sandwich plate so it only flows when the oil reaches a set temp (just like a coolant thermostat).

I'll probably go for a modest 12 row cooler.
 
B13 GA16DE Intake Manifold Install

Old I.M out
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Comparison of the two manifolds - B13 has much longer and bigger runners
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Lower part Installed
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Upper Installed - i love that shot!
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Finished
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DSC00118.jpg
 
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