View Poll Results: T4 or Gt30
T4
53
36.30%
GT30
93
63.70%
Voters: 146. You may not vote on this poll
t4 or Gt30 for 500bhp
09-09-2008, 04:39 PM
#164
PassionFord Post Troll
09-09-2008, 04:41 PM
#167
PassionFord Post Troll
.
09-09-2008, 04:43 PM
#169
PassionFord Post Troll
09-09-2008, 04:43 PM
#170
What I intend to do is use one for boost control as I like the 38mm as they seem to react very quickly, and one that will just be purely to prevent overboost on the nitrous, so set on a firm spring on a manual boost controller to set max boost level.
09-09-2008, 04:45 PM
#172
PassionFord Post Troll
.
09-09-2008, 04:47 PM
#174
Well its potentially another 50% or whatever of exhaust gas, and NONE of it that you want to go anywhere near the turbo.
Ive seen cars that make 20psi max, overspin the turbo like fuck and make 30psi when on the gas cause the wastegate couldnt cope
Ive seen cars that make 20psi max, overspin the turbo like fuck and make 30psi when on the gas cause the wastegate couldnt cope
09-09-2008, 04:48 PM
#176
But anyway, I'm not stripping it down
.And apparantly, Chip would win that contest according to his ex Cally
.
Last edited by Mike Rainbird; 09-09-2008 at 04:50 PM.
09-09-2008, 05:07 PM
#177
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09-09-2008, 05:22 PM
#178
Too many posts.. I need a life!!
Ł850 turbo
Ł200 wastegate (wouldn't put one of these on my lawn-mower)
Ł50 for a screamer pipe (MUCH more if you have it fed back into the exhaust).
Ł120 for a boost controller
Ł100 for Nimbus heat shield
Even doing it yourself comes to Ł1320 with a cheap wastegate, that jumps up to Ł1520 with a decent one, plus if you add any labour costs to that, it soon gets near Ł2k.
Ł200 wastegate (wouldn't put one of these on my lawn-mower
)Ł50 for a screamer pipe (MUCH more if you have it fed back into the exhaust).
Ł120 for a boost controller
Ł100 for Nimbus heat shield
Even doing it yourself comes to Ł1320 with a cheap wastegate, that jumps up to Ł1520 with a decent one, plus if you add any labour costs to that, it soon gets near Ł2k
.
09-09-2008, 06:09 PM
#180
10K+ Poster!!
The blue Tigra from totb has 505hp using a GT3076 @ 1.8 bar iirc
I was VERY impressed with Mike's T4'd engine engine though, seriously strong power without IMO any bad lag.
I was VERY impressed with Mike's T4'd engine engine though, seriously strong power without IMO any bad lag.
10-09-2008, 06:41 AM
#183
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Not really martin,racing world yes real world no, remember most people are never going to use the full potential of a 500hp car, yes if you were looking for the best set up to go racing then i understand doing this, but If you have 2 escort cosworths 1 with T4 the other GT and do a couple of simple back to back tests this would give a general idea on how each performs, a couple of ingear rolling tests say 20-70mph, 40-120 etc etc etc I think we wont be talking about seconds of difference more like tenth's. it would be purely from a lets see what happens and what the general difference would be, not a racing type situation of really hammering the car to find out what is the ultimate setup. People are only really interested in the general out come. Obviously you would still get the pub talk of that car was fitted with 'Y' type turbo and was 2 tenths faster on 0-100 than the car on 'Z' turbo so therefore my car is better than yours situation with no taking into account the driver or any other influence on the car. But it would than give people an informed choice of how they could proceed and how they want their engine to perform.
one for PF or FF to sort out on a grudge match perhaps?
Cheers John
one for PF or FF to sort out on a grudge match perhaps?
Cheers John
10-09-2008, 06:43 AM
#184
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Neil, even T4's are laggy mate, thats the problem with big turbo's. Just have to keep them in the right gear and on the boil more. Always thought of it like riding a 125 bike got to keep the thing in the band to get it moving forward fast.
10-09-2008, 07:30 AM
#185
Not really martin,racing world yes real world no, remember most people are never going to use the full potential of a 500hp car, yes if you were looking for the best set up to go racing then i understand doing this, but If you have 2 escort cosworths 1 with T4 the other GT and do a couple of simple back to back tests this would give a general idea on how each performs, a couple of ingear rolling tests say 20-70mph, 40-120 etc etc etc I think we wont be talking about seconds of difference more like tenth's. it would be purely from a lets see what happens and what the general difference would be, not a racing type situation of really hammering the car to find out what is the ultimate setup. People are only really interested in the general out come. Obviously you would still get the pub talk of that car was fitted with 'Y' type turbo and was 2 tenths faster on 0-100 than the car on 'Z' turbo so therefore my car is better than yours situation with no taking into account the driver or any other influence on the car. But it would than give people an informed choice of how they could proceed and how they want their engine to perform.
one for PF or FF to sort out on a grudge match perhaps?
Cheers John
one for PF or FF to sort out on a grudge match perhaps?
Cheers John
For instance using your car with it's T4 against say Doug Stirlings car on his GT30 would not be fair as his runs 3.9 gearing, the gearing would effect the results as we as many other possible factors...
GT30's are not laggy and you don't need to be in the right gear to make them go you simply press the accelerator down a little further
Last edited by Martin-Hadland; 10-09-2008 at 07:38 AM.
10-09-2008, 07:40 AM
#187
PassionFord Post Troll
That will make interesting reading.
Have you gone internal or external gate gt30?
I expect PF mag or FF would be interested in an article out of that??
Have you gone internal or external gate gt30?
I expect PF mag or FF would be interested in an article out of that??
10-09-2008, 07:40 AM
#188
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10-09-2008, 08:07 AM
#192
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I don't think that you have thought this through John, to be a fair and accurate test it needs to done on the same car if you are going to gain any meaningful results and that has nothing at all to do with use for racing use, that's unless you can find two exact spec cars to compare and that's unlikely.
For instance using your car with it's T4 against say Doug Stirlings car on his GT30 would not be fair as his runs 3.9 gearing, the gearing would effect the results as we as many other possible factors...
GT30's are not laggy and you don't need to be in the right gear to make them go you simply press the accelerator down a little further
For instance using your car with it's T4 against say Doug Stirlings car on his GT30 would not be fair as his runs 3.9 gearing, the gearing would effect the results as we as many other possible factors...
GT30's are not laggy and you don't need to be in the right gear to make them go you simply press the accelerator down a little further
ok fair point, was just looking for quick and easy solutions for a quick comparison! It seems like roosie has the ideal answer for the question now though!
10-09-2008, 08:31 AM
#194
.I met up with Justin just before ND, and threw him the keys to my car, as I wanted a drive of his X5. He was shocked at the difference that all my mods made in driveability (his is a boggo standard T4 RS500 style engine with 512bhp and 420lbft). Now considering his is on MUCH lower gearing than mine (R&D 1:1 6-speed dog box), I wasn't expecting him to notice such a difference.
Gatecrasher said the same thing - and he was coming from a T34 1150kg car
.I realise that my car has MANY differences that all have an accumalative effect, but I was still pleasantly suprised at the number of favourable comments, as I am just used to it, so it feels "normal" to me.
10-09-2008, 09:19 AM
#200
.However, due to this, I suppose you can't really compare either of our cars with standard ones, but given that I had a normal T4 turbo on the car prior to this, I know (as do you from driving my car
), how on/off the boost response was on the non-roller-bearing T4. Now that the BB turbo is on, although the boost threshold has only been lowered by a few hundred rpm, where the old turbo was dead, the BB one spools up much more progressively - as in it starts to make positive boost earlier and climbs much more rapidly . The old one would just suddenly come on boost at a certain rpm, which made it feel very nasty on the road.