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PostPosted: Fri Dec 17, 2010 2:49 pm 
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Clubman

Joined: Fri Dec 10, 2010 8:16 pm
Posts: 59
Car Model: None
Hi all,

My name is Michael, Im 22 and ive just recently joined the GT4DC. Ive been a memeber on the GT4OC since may, and wondered what the other 4 related clubs were like.

I own a 1996 JDM ST205.

Sadly i started to get oil being chucked out my dump valve when i let off the throttle after a hard drive down the motorway. I did a compression check and found good results apart from cylinder 3 i got 85 (from memory).....Piston rings/ringlands was the diagnosis :(

Either way i saw it as an excuse to carry out a forged engine rebuild, upgrade the fueling system, chargecooling system and turbocharger...

Hopefully i may get some advice from people on here as well as the GT4OC..I'm sure everyone on here is a friendly as they there!!

Mike


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PostPosted: Fri Dec 17, 2010 3:07 pm 
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Club Staff
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Joined: Wed Jul 13, 2005 6:54 pm
Posts: 3478
Location: On Top
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Hi Mike, WTTC.
I think a lot of the guys on here have researched a fair bit for their rebuilds so you should get some good advice :-)

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JP
GT4DC Treasurer

Grey St185 RC
Silver BMW E46 M3
Multicolour yawn Honda VFR400
Silver Honda Civic Type-R


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PostPosted: Fri Dec 17, 2010 5:02 pm 
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Joined: Wed Jul 13, 2005 5:10 pm
Posts: 1953
Location: Sunny Fareham, UK
Car Model: ST205
Hi Mike WTTC!

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Kris
95 ST205 - slept for 10 years, now waking up...
Avensis
http://www.gtfours.co.uk
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Turbocharging - the replacement for displacement


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PostPosted: Fri Dec 17, 2010 5:24 pm 
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Joined: Thu Jul 14, 2005 12:44 pm
Posts: 4067
Location: drinking devil fuel
Car Model: ST205
[homer] AAh, a ginger....run

WTTC Mike

How mad are you aiming for on the rebuild (and what's the real target :lol:)


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PostPosted: Fri Dec 17, 2010 5:56 pm 
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Group B
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Joined: Sat Sep 02, 2006 3:13 pm
Posts: 3630
Location: Bournemouth
Car Model: None
Hi Mike, glad you made it finally :)

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If at first you don't suck seed, try drier grain.

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PostPosted: Mon Dec 20, 2010 2:57 pm 
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Clubman

Joined: Fri Dec 10, 2010 8:16 pm
Posts: 59
Car Model: None
Id Like as close to 400bhp as I can get. But id like similar torque.

Engine
86.25mm forged Mahle Pistons
Eagle forged H-beam con roads
Clevitte main, big end, thrust bearings
ARP heads, mains, flywheel bots
Cometec head gasket - 1 - 1.2mm (i read alot about people running 1.6mm head gaskets so that they can run more boost - i would like as much off boost torque as i can get - so think keeping the gasket between 1 or 1.2mm will be fine?? Am i correct this will improve throttle response due to keeping the compression ratio as close to standard as i can?)

Fueling
Sard 800cc injectors (stock rail)
Sard AFPR
Bosch 044 fuel pump

Turbocharger
Garret GT30/76 with .63 AR
OR GT30/71 with .63 AR
(was originaly planning on a 30/76 with .82AR but as im looking for good response/spool up so i think i will benefit form the smaller .63AR - you may even tell me the 30/71 will be adequate for this power level)
However i have recently been told that for an extra £200.00 i can get one of the new GTX30/76R with .63 AR (or any spec) - What do you guys think??

Clutch
Clutchmasters FX400 or similar

Management
Apexi Power FC - mapped by Ryan @ 2bartuning
OR
MoTec - mapped By adrian @ fensport

Head
Standard head
Standard valves/springs
Re-shim
possibly have the head ported as this is done where i work - so figure its probably worth doing whist the head is off??

Im working from memory now so i may have missed something off. Ideally id like your opinions on what is and what isent needed for my goals!

So what do you think so far?


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PostPosted: Mon Dec 20, 2010 3:36 pm 
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Joined: Wed Jul 13, 2005 6:54 pm
Posts: 3478
Location: On Top
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IMHO GT3076R will be too big for your requirements and a GT3071R will easily see 400bhp. For 400 lb/ft you need plenty of boost, as a ball park I would suggest 1.7-1.8 bar.

I did some compressor map analysis a while back
http://www.gt4dc.co.uk/forum/viewtopic. ... +selection

The new GTX series do look nice but they have actually increased the BHP potential of all the turbos at the expense of low down boost threshold (they will boost later than a std GT series). When they start to come out with smaller GTX turbos such as a GTX2860RS we will have a pretty darn good road/track turbo for a 2.0 litre finally. Until then GT3071R is the best compromise IMHO for road/track. Only go bigger if you really need the power for drag purposes or are incresing the rev limit considerably.

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JP
GT4DC Treasurer

Grey St185 RC
Silver BMW E46 M3
Multicolour yawn Honda VFR400
Silver Honda Civic Type-R


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