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Getting the most out of a small turbo

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Old 27-08-2006 | 09:58 AM
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Default Getting the most out of a small turbo

What parts would be involved?

Not opening up the bottom end
And not changing the ECU

cams? T28?

And with what mods what bhp/lbft should be attainable
Old 27-08-2006 | 10:02 AM
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rene, cossy mad got a REAL 300bhp + usinf cams, our turbo is already a t28 but their is hybrid versions which will be stronger and hold more boost than the already overworked standard t28 unit!! im going down this route soon, cossy mad managed 150mph + and 4.7 to 60!!! very quick, on prob is our turbos run out of puff at the higher end of the rev range but its a sacrafice im willing to take for the much better drivability
Old 27-08-2006 | 11:02 AM
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Yes cossymad is using a McCain chip and cams he was selling a few weeks ago ...

what cams should we have then? ..drivability is good with a ST but it like a bit more punch as the fooker is heavy as well LOL cams is easy to install and not too expensive so

i have no intend to convert to a large turbo unless the fooker blows up in style LOL
Old 27-08-2006 | 11:41 AM
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would need adjustable pulleys as well offcoz

btw cant i convert my std turbo to hybrid as its only 28k miles old
Old 27-08-2006 | 01:44 PM
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Originally Posted by Rene
would need adjustable pulleys as well offcoz

btw cant i convert my std turbo to hybrid as its only 28k miles old
And if you use vernier pulleys, then you should have valve cut outs in the pistons which means basically stripping the engine. It can be done also when the pistons are in the block if you have proper tools. And if you use different cams and verniers, why not get the head ported at the same time.
Old 27-08-2006 | 02:09 PM
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Mines around the 300bhp mark. Well i actually have a print out for 322bhp that was done at Well Lane a couple of years ago, but as we know 300 seems to be the limit so obviously its over-readed on the dyno. A few have said Well Lanes rollers are bad for that.

Mines got turbotechnics hybrid and water injection. The previous owner did mention it had cams, but i cant find a receipt for this. Although the graph of 322bhp seems high, its still got to be around the 300 mark i would have thought.
Old 27-08-2006 | 02:11 PM
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s1 how does it drive? does it FEEL fast as im going for 300bhp soon

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Old 27-08-2006 | 02:14 PM
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so would i be able to use the std cam gears then ? just different cams as i dont want to go to far as the missus will have me for lunch!
Old 27-08-2006 | 02:15 PM
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s1rst how much boost do u run and what chip?
Old 27-08-2006 | 02:26 PM
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cahzz

Yeah it does feel pretty quick mate. It does seem to back off at the top end of the rev range a bit, obviously unlike the BT, but it gets there quick enough. Driving round town is perfect with hardly any lag whatsoever, which is what i love about the ST. Totally different car in my opinion.

Rene

GGR305 chip, holding at around 1.3-1.4 bar.
Old 27-08-2006 | 02:40 PM
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i have the GGR chip as well holding 1.3 spiking 1.5
Old 27-08-2006 | 02:47 PM
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GGR have something in the pipeline for the small turbo apparently!!

http://www.grahamgoode.com/cosworth/frnew.htm

at the bottom.
Old 27-08-2006 | 02:56 PM
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hmm might keep an eye on that cheers kev
Old 27-08-2006 | 06:35 PM
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I'm sure I read that in about 2001!!!!!


steve
Old 27-08-2006 | 07:15 PM
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yep,very old,lol, i think it was the head that was reworked and diff cams for a bit more umph
Old 27-08-2006 | 07:33 PM
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i can do the headwork meself but rather not go further at this point then removing the cam cover and stick cams into it (i can do that before the missus gets home so i wont get caught )
Old 27-08-2006 | 09:17 PM
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Cossymads is certainly quick, although it felt very very slow on uphill sections of the Ring. I think my perspective was very much altered though by the fact this were my first laps of the Ring.
Old 28-08-2006 | 11:05 AM
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all this for, if your lucky, 300bhp when you got a bigturbo route and some grens which bring you way over 300bhp...i just don't understand...

and dont come with the lag thing....or is it the money....the stuff you need for a small turbo for 300bhp doesnt come cheap either
Old 28-08-2006 | 12:19 PM
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ive seen 3 ggr 305 conversions do 300+bhp on the rollers,no other mods at all,so it is acheivable contrary to what a lot of people say
Old 28-08-2006 | 01:39 PM
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what does the GGR 305 conversion actually involve?

i think id going to take my car to STU a msd, as everyone seems to rave about this guy
Old 28-08-2006 | 02:35 PM
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mine has a graph for 298bhp/320lbft @ powers... but how acurate this is i'm not too sure mine goes well and peaks about 1.2-1.3 BAR...

it feels good but as said top end revs its slow i'm now booked in with MAD for a 340-350bhp autronic SM4 conversion using high flow inj and custom loom and cdi direct fire and a stg3 T34 with .48 housing...

shall cost a bit but then the sky is the limit, in my view why limit yourself get the best out of the car by spending a little extra and doing things right... agreed the 300bhp can be hit on ST as a few of us have but you then ON the limit and as someone prev said it then costs alot to convert to LT when you just spent £££ getting to 300bhp

just my 2p's worth

or feel free to buy my SMC2 ecu i have for £700
Old 28-08-2006 | 03:01 PM
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Originally Posted by THE RADMAN
ive seen 3 ggr 305 conversions do 300+bhp on the rollers,no other mods at all,so it is acheivable contrary to what a lot of people say
Maybe mine might be over 300 then. I just assumed the Well Lane graph was a bit inaccurate due to everyone saying its not possible to get over 300bhp at all. Could the rollers have been out by 22bhp?

I think i need to put mine on the rollers and see what i get.
Old 29-08-2006 | 05:41 PM
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hmmm
Old 29-08-2006 | 06:11 PM
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anyone heard what GGR are developing? they recon they are working on a new even better small turbo power conversion
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