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MD321H Vs TD05 20G Vs Garrett GT2871R

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Old 30 March 2009, 09:37 PM
  #211  
joz8968
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Anger, is that on the std MY99 WRX block/heads?
Old 30 March 2009, 09:49 PM
  #212  
Jolly Green Monster
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Originally Posted by joz8968
Anger, is that on the std MY99 WRX block/heads?
no..

built 2litre with the standard V6 WRX type R heads.. (not sti) running on a SimTek.

Simon
Old 30 March 2009, 10:26 PM
  #213  
joz8968
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Cheers.

Really strong pistons/rods/crank/bearings, I take it?

Simon, what sort of ballpark figures to expect the 321H to make on a v.1 ODB with v.1 WRX hydraulic heads (with all appropriate supporting mods, of course), on V-Power only?

Last edited by joz8968; 30 March 2009 at 10:34 PM.
Old 31 March 2009, 12:36 AM
  #214  
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It would be interesting to know the full spec.
1 bar around 3650 if I am seeing the graph right ? Why the slow spool?
Old 31 March 2009, 06:36 PM
  #215  
TingTongPJ
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anger out of interest what torque are you running ?

[/QUOTE]

think jp is still pound for pound top dog at the moment

anyone got a equiv or better set up ?

can't believe the build up of the boost and torque for a car running over 400bhp

Last edited by TingTongPJ; 31 March 2009 at 06:58 PM. Reason: spelling
Old 31 March 2009, 07:40 PM
  #216  
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P1 2.0 litre standard internals
md321h
mapped by Bob Rawle
p1 ecu
V power only
plus all supporting mods.

Last edited by PIant; 31 March 2009 at 07:42 PM.
Old 31 March 2009, 08:16 PM
  #217  
banny sti
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It is unfair to compare VVT cars to none vvt cars imho. I could stick up a graph of a 2.5 car with the vvt heads on a t+, that would out spool anything here.

Banny
Old 31 March 2009, 10:00 PM
  #218  
Jay m A
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Harvey, the SRR rollers (as I'm sure other rollers do too) seem to make the cars spool later. My car on the road did manage 1 bar at 2600 rpm, yet same spec got to 1 bar at 3100 on SRR
Old 31 March 2009, 10:55 PM
  #219  
Juice
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harvey any graphs for that hs420 on a 2.5 sti?
im interested in it if its gona make the figures i want
saq
Old 01 April 2009, 10:41 AM
  #220  
joz8968
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Originally Posted by Jay m A
...the SRR rollers (as I'm sure other rollers do too) seem to make the cars spool later. My car on the road did manage 1 bar at 2600 rpm, yet same spec got to 1 bar at 3100 on SRR
Would that be the slight lag induced because of having to overcome the rollers' initial inertia?...

Or are the rollers really light and instantly free-spinning, therefore not accountable for that 500rpm later spool-up point?

Last edited by joz8968; 01 April 2009 at 10:43 AM.
Old 01 April 2009, 11:36 AM
  #221  
Mus
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it would be nice to see a graph of a T36 or hs420 on a built 2.5?
Old 01 April 2009, 11:37 AM
  #222  
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MD321H and the vf28, on my p1
vf28 was after decat, big kn and a remap.
Same spool as the vf then leaves it for dead.
The delta dash was done on the same bit of road, same gear and very close air temps.

love the 321h it did every thing mark and Bob said it would.
Old 01 April 2009, 11:41 AM
  #223  
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Yet another under-performing MD321H

Nice graphs
Old 01 April 2009, 11:47 AM
  #224  
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Originally Posted by PIant


MD321H and the vf28, on my p1
vf28 was after decat, big kn and a remap.
Same spool as the vf then leaves it for dead.
The delta dash was done on the same bit of road, same gear and very close air temps.

love the 321h it did every thing mark and Bob said it would.
That's impressive! Basically a 400bhp turbo producing the same drive-ability as a 320bhp turbo with all other things equated as far as possible.

I guess that's why it's not cheap!
Old 01 April 2009, 12:05 PM
  #225  
leerichosti
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Originally Posted by PIant


MD321H and the vf28, on my p1
vf28 was after decat, big kn and a remap.
Same spool as the vf then leaves it for dead.
The delta dash was done on the same bit of road, same gear and very close air temps.

love the 321h it did every thing mark and Bob said it would.
what other mods do you have in place?? intercooler and injection and such??

nice results

cheers Lee
Old 01 April 2009, 12:19 PM
  #226  
PIant
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3" exhaust, full system
550 injectors
gt headers and up pipe
walbro
7b's
hyperflow frontmount
ppg g/box
large k&n

Last edited by PIant; 01 April 2009 at 12:21 PM. Reason: spelling
Old 01 April 2009, 12:23 PM
  #227  
Mus
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which of the turbos make 400 torque? on 2liter non vvt
Old 01 April 2009, 12:42 PM
  #228  
PIant
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321h would of done 400 lbs/ft. with more boost on a built engine.
But mine was a standard p1 engine so was mapped to 1.5 bar tailing off.
Old 01 April 2009, 02:36 PM
  #229  
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25% transmission loss?

More like 375hp in real terms!
Old 01 April 2009, 02:43 PM
  #230  
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Originally Posted by PIant
321h would of done 400 lbs/ft. with more boost on a built engine.
But mine was a standard p1 engine so was mapped to 1.5 bar tailing off.
Agree - I'm currently making 377lb/ft at just over 5K rpm on a standard 03 STI engine using a 321H running just over 1.7 bar tailing to 1.5bar top end. With a built engine and 2bar of boost, I expect to get well over 400lb/ft
Old 01 April 2009, 03:04 PM
  #231  
PIant
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25% transmission loss ?

more like 375 hp in real terms !

Nah more like 407hp
same car.

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Last edited by PIant; 01 April 2009 at 03:09 PM. Reason: spelling
Old 18 August 2010, 09:39 PM
  #232  
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What a good read, long but good.
Old 19 August 2010, 05:24 PM
  #233  
glen.w
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just had my 03 sti rebuild done and had all forged up just lookin for a turbo now to get my car close to 400 bhp and torgue??? which is best??
Old 19 August 2010, 05:50 PM
  #234  
RA Dunk
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If you want 'close' to 400 BHP (or sometimes a bit more) pound for pound the 20G won't be beat.
Old 19 August 2010, 06:35 PM
  #235  
Anger
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Originally Posted by RA Dunk
If you want 'close' to 400 BHP (or sometimes a bit more) pound for pound the 20G won't be beat.

Even tho a MD321T spools faster on a 2 litre lol.... and yes i had both on my RA

JGM will back this up aswell as he found the same result
Old 19 August 2010, 06:39 PM
  #236  
B0DSKI
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Forgot i'd even started this thread!! After what I learnt on here I ended up going for a 321T. Should have the car back with it and a **** load of other bits done in the next week or so
Old 19 August 2010, 06:43 PM
  #237  
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So Bobski, the t seem to be better on a newage than a h?

Last edited by fastboyslim; 19 August 2010 at 07:42 PM.
Old 19 August 2010, 06:50 PM
  #238  
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For 400-450 Bhp yes
Old 19 August 2010, 07:40 PM
  #239  
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Is the h beter to 400?
Old 19 August 2010, 07:43 PM
  #240  
Anger
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I had a H, then went to a T and there isnt a massive difference between them... well apart from about 40bhp and a load more torque


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