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thinking of a td05 20g? on my v4 2.5

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Old 12 March 2013 | 11:44 PM
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Default thinking of a td05 20g? on my v4 2.5

hi just got y type r fished, 2.5 block,nitraded crank,acl berings,,apr head bolts,genuin sti pistons/rods,v4 sti heads,hks fmic,hks intake,full nurspec r system, just gt simtek ecu ant lag/ l controle and mapped by andrew carr.running a vf24 atm @1.3 bar boost,,i dont no what sort of bhp im running????as was a live map by andrew c.its got no lag @ all at the mo pulls hard down bottom nd mid,,but he advced me to get a td05 20 g as they god n a 2.5 build..and good for 400bhp+ is this true?? if so where would i get a good cheapish 1 along with 550s injectors ;]

Last edited by andy beffro; 12 March 2013 at 11:49 PM.
Old 13 March 2013 | 12:49 AM
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Scoobie clinic sorted me out with a TD0520g. On the 2.5 it worked very well. Cost new was £875.+ mapping.
Old 13 March 2013 | 02:13 AM
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any reason u went for sti pistons on rebuild? they are rather crap and i wouldnt take them much above 360
Old 13 March 2013 | 02:37 AM
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Originally Posted by Pramas
any reason u went for sti pistons on rebuild? they are rather crap and i wouldnt take them much above 360
I was thinking the same. Why put STi pistons when forged Mahle are about the same price and way better?
Old 13 March 2013 | 10:56 AM
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If you are going for the TD05 20g, make sure you have one of Harvey's up-pipes, now available from AS Performance.

I have a Harvey Smith modded TD05 20g on my 98 UK 2.5 rebuild. It uses 740cc injectors and makes over 400/400.

Absolutely no lag and spools from a ridiculously low rpm.

So it's dead easy to drive around town or on the open road.
Old 13 March 2013 | 12:19 PM
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Originally Posted by alcazar
If you are going for the TD05 20g, make sure you have one of Harvey's up-pipes, now available from AS Performance.

I have a Harvey Smith modded TD05 20g on my 98 UK 2.5 rebuild. It uses 740cc injectors and makes over 400/400.

Absolutely no lag and spools from a ridiculously low rpm.

So it's dead easy to drive around town or on the open road.
+1 for Harvey modded 20g #
have a Harvey 20g here with Harvey up pipe, however on a 2.0 spool is a little later than a vf series turbo, but the vf wont make over 400bhp

you will need more than 550's to max the turbo out even at 1.5 bar.

Very happy with mine, just dont buy one of the fleabay crappers, keep an eye out for an Andy forest one or one of Harveys modded 20g's
Old 13 March 2013 | 05:43 PM
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Don't forget the pistons people.

Another way could be the SC36. The clinic rave about their type R 2.5 rebuild and have tried all sorts of turbos on it but they keep going back to the SC36 as they say it is by far the best turbo for road use.
Old 13 March 2013 | 05:52 PM
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How much power can be given by an SC36?
Old 13 March 2013 | 06:50 PM
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The guide line would be 360 hence SC"36"

However they can and do produce more depending on supporting mods etc..

Give the clinic or AJ a call....
Old 13 March 2013 | 07:58 PM
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Originally Posted by Markfey
The guide line would be 360 hence SC"36"

However they can and do produce more depending on supporting mods etc..

Give the clinic or AJ a call....
I would point out also... 360 is plenty fast in a classic
Old 13 March 2013 | 10:09 PM
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Yes, it is, but 400 has bragging rights........
Old 01 May 2013 | 12:41 AM
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got the 20g turbo :] now i need injectors... eny help lads???what do i go for and from where ???need them asap as andrwe carr coming bk to mapp it to the 20g ;]
Old 01 May 2013 | 12:45 AM
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AND what sort of boost would it need for 380-400 bhp???with suporting mods
Old 01 May 2013 | 01:02 AM
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Originally Posted by andy beffro
AND what sort of boost would it need for 380-400 bhp???with suporting mods
1.5 / 1.6 bar
Old 01 May 2013 | 01:04 AM
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you will be wanting 650cc or greater injectors ideally to make 400+ comfortably,
Old 01 May 2013 | 10:33 AM
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Mine has 740cc injectors. You DID get the Harvey up-pipe? If not, spool will be later.....
Mine has tubular headers and a Harvey up-pipe and spools to 1 bar below 3000rpm..well below.

Bob Rawle advised me NOT to go above 1.5 bar with the standard studs in the head...I can't remember if yours has the uprated ones?
Old 01 May 2013 | 01:09 PM
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I ran a 20G and 550's. Car made 380bhp at 1.5 bar boost. I used laterals GT spec manifold and up pipe and also achieved a bar of boost well before 3000rpm.
I then went for a 20% meth mix to get over 400 but had to add an adjustable FPR as the 550's couldn't cope on their own.
Old 01 May 2013 | 07:40 PM
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thanx for the replys lads...
no didnot get a up pipe :[ didnt no...as im still new to the scoobys,,this my 1st 1 from a evo.. i have a nurspec r full exhaust system from turbo,,no cats..
so what injectors to get then lads??? for say 400bhp... AND FROM WHERE?????

Last edited by andy beffro; 01 May 2013 at 07:42 PM.
Old 01 May 2013 | 07:50 PM
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Give engine tuner a call. He'll recommend and supply the best part for your setup.
Old 01 May 2013 | 07:52 PM
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http://lateralperformance.co.uk/contact.php
Old 01 May 2013 | 07:57 PM
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Originally Posted by MattyB1983
thanx again matty ;] and the engine still going strong mate ;]
get this turbo nd injectors on nd thats it ;] i hpe
Old 01 May 2013 | 08:05 PM
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right then..just been offerd a set of 740s off a 99 scooby,, do i need fiting kit to fit these ye,,as mines a 98,, if these will fit and they are a good price ,,i will buy them
Old 01 May 2013 | 08:11 PM
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Contact Alyn at AS Performance for an up-pipe, it's well worth it.
Old 01 May 2013 | 08:12 PM
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Originally Posted by alcazar;11022809[B
]If you are going for the TD05 20g, make sure you have one of Harvey's up-pipes, now available from AS Performance.
[/B]
I have a Harvey Smith modded TD05 20g on my 98 UK 2.5 rebuild. It uses 740cc injectors and makes over 400/400.

Absolutely no lag and spools from a ridiculously low rpm.

So it's dead easy to drive around town or on the open road.
Here, from 13/03/2013.
Old 07 June 2013 | 02:01 AM
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how or where do i get in touch with alun as performance for a up pipe?are they worth getting?? and how much are they???even if somec1 had second hand hedders and up pipe ;] i got 740 injectors on the way off gary ;] and a mitsi td05 20g,,whats the difrence between a mitsi td05 20g and these andy forest 1s,,,..as i thought a 20g is a 20g lol,, as long as its not ebay shiiiit
Old 07 June 2013 | 11:35 AM
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A S Performance: http://asperformance.com/contact/ (Google is your friend).

Yes, very much so.

Ask Alyn.

Can't say differences between TD05's, mine was modded and rebuilt by the late, great Harvey Smith.

My car spools very early and pulls like a train right through the rev range. Easily driveable round town too.
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