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Rolling road today
#1253116
24/08/2011 23:41
24/08/2011 23:41
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Joined: Aug 2010
Posts: 141 East yorkshire
sherlock
OP
On a journey
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OP
On a journey
Joined: Aug 2010
Posts: 141
East yorkshire
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Just had my car dyno'd today video Current mods are, T34 turbo 3" exhaust system Front mount intercooler 4 bar fpr 255 lph fuel pump gtech 2 greddy rebic IV controlling one 850cc injector Its currently 432bhp/380lbft @ 6000 rpm, the car was getting a wobble on so we couldnt take it to the rev limiter. I think it should be nearer 450bhp/400lbft - still on the standard engine York raceway this weekend so if it doesnt break i'll be back for a full power run with it properly strapped down.
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Re: Rolling road today
[Re: sherlock]
#1253124
24/08/2011 23:54
24/08/2011 23:54
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Joined: Feb 2007
Posts: 3,486 London Tan
technics
I need some sleep
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I need some sleep
Joined: Feb 2007
Posts: 3,486
London Tan
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Wow, on a standard engine! With a Gtec 2 chip!
How long have you been running this power for? What boost to make that power?
p.s not that clued up as to what a T34 turbocharger is.
You must be mad.
Now in the 400+ bhp club!
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Re: Rolling road today
[Re: sherlock]
#1253139
25/08/2011 00:31
25/08/2011 00:31
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GS_Racing
Unregistered
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GS_Racing
Unregistered
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what spec is the t34?not a cosworth one going by the power level.
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Re: Rolling road today
[Re: sherlock]
#1253166
25/08/2011 01:46
25/08/2011 01:46
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leon1
Unregistered
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leon1
Unregistered
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good result but how long will the engine last?
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Re: Rolling road today
[Re: sherlock]
#1253367
25/08/2011 14:09
25/08/2011 14:09
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Nobby
Unregistered
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Nobby
Unregistered
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I don't mean to sound rude, but the figures sound a tad high to me.
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Re: Rolling road today
[Re: ]
#1253385
25/08/2011 14:40
25/08/2011 14:40
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group5lancia
Unregistered
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group5lancia
Unregistered
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Or alternatively, if the figures are accurate then your turbo isn't a T34. Even modified a T34 will not manage over 380-400BHP, so you must have a different turbo than you think.
Last edited by group5lancia; 25/08/2011 14:47.
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Re: Rolling road today
[Re: sherlock]
#1253394
25/08/2011 14:48
25/08/2011 14:48
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GS_Racing
Unregistered
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GS_Racing
Unregistered
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my old cosworth ran a modified t34 with a .63 housing (housing was machined amongst other things) and managed 418bhp on an engine dyno without ancillaries, so 400bhp is the ABSOLUTE max on these in car,and then they average 18 months. the above level was produced with 2.2 bar, and before any head flow arguments are mentioned,it was an £8000 engine build with the best cosworth head finisher in the world doing the porting (ex f1, you have to arrange for him to come out of retirement type of guy)the turbo you are running could well be more like the cosworth t4 which is actually a t3 flanged turbo.
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Re: Rolling road today
[Re: ]
#1253403
25/08/2011 15:08
25/08/2011 15:08
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group5lancia
Unregistered
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group5lancia
Unregistered
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the turbo you are running could well be more like the cosworth t4 which is actually a t3 flanged turbo. I agree - particularly looking at the revs where the boost comes in....
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Re: Rolling road today
[Re: sherlock]
#1253552
25/08/2011 21:27
25/08/2011 21:27
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GS_Racing
Unregistered
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GS_Racing
Unregistered
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this is a data print out from a similar engine to my old one,with a .63 t34.owner says he did turbos every 3 months at this level or so!lol and this is a t38 car
Last edited by GS_Racing; 25/08/2011 21:30.
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Re: Rolling road today
[Re: sherlock]
#1253590
25/08/2011 22:38
25/08/2011 22:38
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group5lancia
Unregistered
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group5lancia
Unregistered
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The turbo is .63 turbine housing, stage 3 T3 turbine wheel and T04b h trim compressor. T3 turbine and T4 compressor = T34 or maybe i've got it wrong. Full boost on the road comes in at 4500rpm, theres not enough load on the rolling road to get it spooling earlier. Generic name for your turbo is a T3/T4 hybrid - but it's not a T34 which is a specific turbo (with a couple of options) supplied by Garrett as the 'big' turbo for the Escort Cosworth. The T04B H trim compressor is reputedly good enough for 450BHP as it is rated at 49 lbs/minute of airflow.
Last edited by group5lancia; 25/08/2011 22:42.
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Re: Rolling road today
[Re: nick_d]
#1253594
25/08/2011 22:42
25/08/2011 22:42
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Joined: Dec 2005
Posts: 1,670 SW London
Rudidudi
My life on the forum
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My life on the forum
Joined: Dec 2005
Posts: 1,670
SW London
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Think I'd prefer the t34 figures to be honest... Monster early torque! exactly my thoughts before i read your post stacks of bottom end grunt makes for a great tractable engine. ideal for road use
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Re: Rolling road today
[Re: nick_d]
#1253598
25/08/2011 22:57
25/08/2011 22:57
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GS_Racing
Unregistered
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GS_Racing
Unregistered
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Think I'd prefer the t34 figures to be honest... Monster early torque! Interesting the t34 makes more torque than the bigger t38.... I guess I'll have to wait and see.... Hope I'm pleasantly surprised !
Nick Nick,honestly,the t34 is a FANTASTIC conversion for the road,very little will keep with it and the lag compared to a t3 is negligible from the drivers point of view.
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Re: Rolling road today
[Re: ]
#1253608
25/08/2011 23:20
25/08/2011 23:20
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Joined: Oct 2006
Posts: 1,829 kidderminster
nick_d
My life on the forum
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My life on the forum
Joined: Oct 2006
Posts: 1,829
kidderminster
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Was running t3 super60 before, which made 302bhp at a mesely 1.2 bar on a very very poorly engine... So I'm hoping for big things from my new rebuild.. Will be fitting (or flea will) larger map sensor for some manly boost! what ever your set up is buddy you seem to be doing something right! Reckon flea could sqeeze out somemore horses though, g tech seems to be working well though..... Is this most powerful car with plug and play chip? Nick
368bhp @ 1.5 bar
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Re: Rolling road today
[Re: sherlock]
#1253660
26/08/2011 01:33
26/08/2011 01:33
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group5lancia
Unregistered
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group5lancia
Unregistered
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Group5, fair play I stand corrected So t34 is still a t3 compressor? What's this t38 then? A T38 is a Turbo Technics hybrid turbo I believe which they developed in-house as an upgrade for Mitsubushi Evos, and as a replacement for the troublesome Mitsu turbos. Also available for Subarus, Toyotas, and various Fords. Support 480-550BHP depending on the version. I believe, but do not know for sure, that they use the later Garrett compressor wheels, as used in the GT76R BB turbos and later, more efficient turbnie wheels too. Exhaust side is T3 though and the T04E sized compressor covers are Turbo Technics castings.
Last edited by group5lancia; 26/08/2011 01:39.
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Re: Rolling road today
[Re: sherlock]
#1253675
26/08/2011 06:50
26/08/2011 06:50
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Joined: Dec 2005
Posts: 1,895 New Zealand
Saint
My life on the forum
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My life on the forum
Joined: Dec 2005
Posts: 1,895
New Zealand
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No arguing with the numbers, impressive result the T04B H trim is a big wheel, as group5 said 49lbs or so, the map shows the compressor has a pretty severe surge line so needs to be matched to the turbine which in combo gives a high boost threshold. Aqua blue is 5000rpm (95% VE) then 6,7,and 8K Looks like at 7000rpm and 1.5bar it should be good for 430lbs (430bhp roughly) if everything else is bang on, you are right in the sweet spot of peak effcency of 74%, but you are doing it at lower revs so the VE must be up over 95%. Not sure it would like over 1 bar at under 5000rpm, you got an surge issues on the street? A stage 3 T3 turbine is pretty high flowing so sounds like a drag turbo or something where boost threshold isn't so important compared to peak output Good result
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Re: Rolling road today
[Re: Rudidudi]
#1253739
26/08/2011 11:22
26/08/2011 11:22
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Joined: Dec 2005
Posts: 12,295 Sandhurst
Begbie
Ex El Presidente
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Ex El Presidente
I AM a Coop
Joined: Dec 2005
Posts: 12,295
Sandhurst
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Think I'd prefer the t34 figures to be honest... Monster early torque! exactly my thoughts before i read your post stacks of bottom end grunt makes for a great tractable engine. ideal for road use Well yes, when you're running 35psi it will be torquey, but since most owners here will run about 10psi less than that, the torque figure won't be as high, similar to what the T38 produces
Your car is Usain Bolt with wellies
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Re: Rolling road today
[Re: sherlock]
#1253781
26/08/2011 13:33
26/08/2011 13:33
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group5lancia
Unregistered
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group5lancia
Unregistered
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Correcting my post #1253660 above, the Turbo Technics T38 has a 73mm diameter 60 trim compressor wheel and housing to suit. It flows 54 lbs/min at 65% efficiency.
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Re: Rolling road today
[Re: sherlock]
#1254209
27/08/2011 16:46
27/08/2011 16:46
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Joined: Aug 2010
Posts: 141 East yorkshire
sherlock
OP
On a journey
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OP
On a journey
Joined: Aug 2010
Posts: 141
East yorkshire
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Saint, no its not surging on the road, I think a smaller turbine would create issues though. Flea, the front of the car was strapped down, you can see one of the straps at the front nearside. It really needed the back end strapping aswell but it was getting late in the day and they had customers cars in the workshop which they needed to get out. It is a normal working garage however he has another workshop where he builds his own kit cars (Road runner racing) these are mainly based on mx5 running gear, but sometimes bike engined or even v8 powered, there all mapped on his rolling road. These are sold to private customers but some also go out on lease to trackday companys. The boost does come in earlier on the road, i'm also only using a manual boost controller which isnt ideal. I pressure tested the induction system looking for boost leaks but also found the wastegate starting to open at around 10psi. Its never going to be a quick spooling turbo but it can be improved. I've got the injector mounted in the only place it could really go to get it firing straight through the throttle body. Their's no way of knowing how the fuel is distributed to each cylinder, its the same if you are using nitrous or water injection, but afterall single point injection worked ok on cars before more efficient multi point became the norm. The weather's been pretty poor up here, I'll be giving the drag racing a miss unless it improves.
Last edited by sherlock; 07/09/2011 00:18. Reason: re-worded so I dont come across as a tw@t!!!!!
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Re: Rolling road today
[Re: sherlock]
#1255624
31/08/2011 22:18
31/08/2011 22:18
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GS_Racing
Unregistered
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GS_Racing
Unregistered
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a flat 13 is a VERY quick road car!well done
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Re: Rolling road today
[Re: sherlock]
#1278545
11/10/2011 22:47
11/10/2011 22:47
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Joined: Aug 2010
Posts: 141 East yorkshire
sherlock
OP
On a journey
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OP
On a journey
Joined: Aug 2010
Posts: 141
East yorkshire
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Just a update for those who are interested i've finally got a full power run done on my car. This was the full run up to the rev limiter but the rpm scale across the bottom is out by a few hundred, it should be reading nearer to 7200rpm . But its still a good indication of what its doing. Thats this turbo pretty much maxed out now,I might look into changing the compressor wheel over the winter. I also need to start thinking about some sort of engine management/re-map before taking it any further and try to get some boost low down in the rev range just to make it a bit more drivable on the road. It was the last event of the year at york raceway this sunday just gone so I went for afew more blasts, It had pissed it down the night before and there was still the odd damp patch here and there, I dont think I managed one run without it spinning up in 2nd even after letting the tyre pressures down to 15psi. 1/4 mile
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Re: Rolling road today
[Re: sherlock]
#1278550
11/10/2011 22:58
11/10/2011 22:58
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Joined: Feb 2007
Posts: 3,486 London Tan
technics
I need some sleep
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I need some sleep
Joined: Feb 2007
Posts: 3,486
London Tan
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Nice figueres!
Last edited by technics; 11/10/2011 22:59.
Now in the 400+ bhp club!
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