Losing grounds...?
05-28-2018, 04:37 PM
#1
Losing grounds...?
The other day I helped out a friend on a US spec '86 customer car. We fixed some problem with the hatch mechanism, an oil leak and went through the wiring to convert it to Euro spec front fog/driving lights, working out the subtle and slightly confusing harness differences in the relay/fuse box between ROW and US spec cars. The car was stock engine-wise, and remarkably clean regarding some bolts that are usually always rusty and out of use on Euro spec cars (like the four inner screws holding the batwing to the plastic wheel wells).
I then started the car to move it around and was absolutely shocked how miserable the engine responded. The throttle response was so poor I could not help feel there was something wrong with it, when in fact some proper driving showed it was just running the way it should.
This brings me to the point of this post - are there folks out there who really buy such cars out of enthusiam for their standard behaviour?
I then started the car to move it around and was absolutely shocked how miserable the engine responded. The throttle response was so poor I could not help feel there was something wrong with it, when in fact some proper driving showed it was just running the way it should.
This brings me to the point of this post - are there folks out there who really buy such cars out of enthusiam for their standard behaviour?
05-29-2018, 05:15 PM
#3
Rennlist Member
Bone stock, with weak old wastegates and stuffy cats, etc., these cars can be a bit underwhelming. Mine was a real slow poke when I got it with 32k miles. That said, with some thoughtful upgrades, even a 2.5L turbo can be mighty impressive. Crazy Eddie's car, with early Vitesse MAF and turbo, is stoopid fast. Other than the new collector crowd starting to form around low mile cars, I think most people buy these cars for what they can be, rather than for what they are... 
05-29-2018, 05:43 PM
#4
My 86 2.5L back in 93-95 was very quick. It would pull off under 14 secs in a quarter mile at 1000ft elevation with only an Allan Johnson chip I put in at MCL Porsche in Vancouver.
I test drove an 87 a few years later and that was super slow compared to mine. The stock re-circ valve used to be a problem and would fail open which is what made the 87 I test drove terribly slow.
My guess is there is something not quite right with the car you drove.
I test drove an 87 a few years later and that was super slow compared to mine. The stock re-circ valve used to be a problem and would fail open which is what made the 87 I test drove terribly slow.
My guess is there is something not quite right with the car you drove.
05-31-2018, 02:42 PM
#5
Drifting
My 86 2.5L back in 93-95 was very quick. It would pull off under 14 secs in a quarter mile at 1000ft elevation with only an Allan Johnson chip I put in at MCL Porsche in Vancouver.
I test drove an 87 a few years later and that was super slow compared to mine. The stock re-circ valve used to be a problem and would fail open which is what made the 87 I test drove terribly slow.
My guess is there is something not quite right with the car you drove.
I test drove an 87 a few years later and that was super slow compared to mine. The stock re-circ valve used to be a problem and would fail open which is what made the 87 I test drove terribly slow.
My guess is there is something not quite right with the car you drove.
05-31-2018, 04:02 PM
#7
Advanced
Now I really must ride in someone's 3.0. Mine is bone stock 87....I think it is somewhat quick. Of course, it is nothing compared to my BMW S1000rr or modified Cayenne TTS with 650hp. I was going to be one of those collector folks you speak of but then I bought that 3.0 block. Still have yet to decide what I am going to do.
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05-31-2018, 09:01 PM
#8
Drifting
06-01-2018, 06:50 AM
#9
As said, this car was running the way it should. It's just that the stock mapping is miserable.
$lippery $lope... The first Porsche I4 3L turbo engine I experienced was a factory 968 turbo S.
Even if they were the original 3L turbo engine on this car platform and even if it is not too difficult to make a better configuration of this engine these days, the first time you experience that kind of low down torque is unforgettable.
$lippery $lope... The first Porsche I4 3L turbo engine I experienced was a factory 968 turbo S.
Even if they were the original 3L turbo engine on this car platform and even if it is not too difficult to make a better configuration of this engine these days, the first time you experience that kind of low down torque is unforgettable.
Last edited by Thom; 06-01-2018 at 09:15 AM.
06-01-2018, 11:42 AM
#10
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I've never felt a stock 944t, the most stock i felt was with a set of chips, TiAL 38mm gate and a new recirc valve. That didn't feel bad at all though on 10psi.
I think the gate and re circ valve really helps.
I think the gate and re circ valve really helps.
06-01-2018, 12:27 PM
#11
I never liked the stock one and have not taken one apart. I will dig through my stuff this weekend and see what I find about checking the stock one. I just bought the one you see in the Lindsey Racing pic. They can be taken apart and different springs can be used.
06-01-2018, 12:49 PM
#12
Drifting
If the recirc-valve is stuck in recirc-mode (that's the failure we're talking about, right?), would on-boost performance be noticably worse? That is, if it's bad, would my recirc-valve cause poor performance at low & high rpm or just low (under 3k)?
My recirc-valve might be original; I've never changed it
My recirc-valve might be original; I've never changed it
08-11-2018, 03:14 PM
#14
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The other day I helped out a friend on a US spec '86 customer car. We fixed some problem with the hatch mechanism, an oil leak and went through the wiring to convert it to Euro spec front fog/driving lights, working out the subtle and slightly confusing harness differences in the relay/fuse box between ROW and US spec cars. The car was stock engine-wise, and remarkably clean regarding some bolts that are usually always rusty and out of use on Euro spec cars (like the four inner screws holding the batwing to the plastic wheel wells).
I then started the car to move it around and was absolutely shocked how miserable the engine responded. The throttle response was so poor I could not help feel there was something wrong with it, when in fact some proper driving showed it was just running the way it should.
This brings me to the point of this post - are there folks out there who really buy such cars out of enthusiam for their standard behaviour?
I then started the car to move it around and was absolutely shocked how miserable the engine responded. The throttle response was so poor I could not help feel there was something wrong with it, when in fact some proper driving showed it was just running the way it should.
This brings me to the point of this post - are there folks out there who really buy such cars out of enthusiam for their standard behaviour?
I bought this car from a member fluidplay (Dennis) it had sustained a engine and fuse box short circuit I had to replace all the wiring harness for the engine bay and inside the cabin under the dash