Ninemeister article
#92
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Colin,
You ought to send a set of your parts out to one of the well-known 993 motor builders here in the States (Jeff Gamroth, for example) and have them run an independent test. If you can conduct a true scientific test (controls, same motor, dyno, etc) that confirms your claims, you will have tons of customers here in the US.
You ought to send a set of your parts out to one of the well-known 993 motor builders here in the States (Jeff Gamroth, for example) and have them run an independent test. If you can conduct a true scientific test (controls, same motor, dyno, etc) that confirms your claims, you will have tons of customers here in the US.
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Colin,
I know you've been working on your modified heads for the SAI ports, but how does one get around the 100-cell cat problems here in States?
Anyone can correct me if I'm way off on this, but I thought the 100-cell cats can generate CEL on the OBDII cars. Also, EVEN if we can get them to run, would it be considered street legal in California? Anyone know of any 100-cell cats that are?
I know you've been working on your modified heads for the SAI ports, but how does one get around the 100-cell cat problems here in States?
Anyone can correct me if I'm way off on this, but I thought the 100-cell cats can generate CEL on the OBDII cars. Also, EVEN if we can get them to run, would it be considered street legal in California? Anyone know of any 100-cell cats that are?
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Originally Posted by mgianzero
....Also, EVEN if we can get them to run, would it be considered street legal in California? Anyone know of any 100-cell cats that are?
Sorry but I don't know anything about a 100 cell cat, which IMHO adds little benefit to a NA motor with stock internals.
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I read the Ninemeister article in Total 911 today. WOW!...
Colin...given the number of rebuilds is only going to increase, they sure make a case for this route when you do.
Excellent article...and nice mug shot!
Hope to see something in the US someday soon!!!
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Colin...given the number of rebuilds is only going to increase, they sure make a case for this route when you do.
Excellent article...and nice mug shot!
Hope to see something in the US someday soon!!!
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#98
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David,
Try a car with sports cats and compare. I have them and the car is a lot less restricted. It definitely feels like it has gained a few horses. ;-)
Cheers,
David
Try a car with sports cats and compare. I have them and the car is a lot less restricted. It definitely feels like it has gained a few horses. ;-)
Cheers,
David
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Colin is not familiar with our laws here in the States. For instance, when introducing a new product, you MUST test the product in Florida first because of the "Columbus clause" in our Constitution. I will offer my car as a donor.
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Originally Posted by Robin 993 c2
Sorry if I jumped the gun, and I am defensive of 9M, because. I work for 4Tech and set up the test. My background is in F1 and Indy car. I ran the Mercedes F1 engine test team for 6 years and as a consequence tend to take a scientific approach.
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Originally Posted by Robin 993 c2
The biggest variable as you would guess is the standing start, tyres, clutch and the surface do not repeat that well. All cars had standard gearboxs, other than the 9M race car. .
Originally Posted by Robin 993 c2
The 9M rolling road is a good comparison tool and the fact that standard cars give standard power means that the absolute values can't be too far off, unless Porsche are playng the power claim game as well?
I would have loved to have the AX22 datalogs as this would have given much more flexibility to conduct an analysis at different speeds. I will stick to 50-100mph if you believe it is good enough...
Originally Posted by '95 993
Jean,
I have sent you a pm re article (I have an electronic copy)
John
I have sent you a pm re article (I have an electronic copy)
John
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#101
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Thanks for everyone's words of encouragement.
Jean,
Unfortunately the first 4.0 litre engine is in a customers car and we have not had the chance to test it other than on the dyno.
Because of time constraints we only managed to record two runs in each car so the results were using the "best of" feature of the AX22 software although this was carefully checked for each car to ensure that gearchanges were included in the times. From the two runs and one extra standing start the theoretical best 60-130 time of the 3.8 in my RS CS (stock gearing) is 10.0 secs dead, but the best from one run was 10.22sec. Remenber that this was on a totally flat runway tested in one direction only against a slight headwind of around 10-15mph (according to the airfield controller). The weight of the car on the day was 1280kg with lardy driver onboard (
) - I will post a picture of the speed/time graph in my next post (data is on my laptop). How does this compare with your known turbo results??
In dyno testing the 4.0 litre showed 40-50Nm improvements right across the rev range compared to the best ever pull of my 3.8 when the engine was fresh last year, thus I would guess that the 4.0 could post a 60-130 in the low 9.0s given identical conditions.
Originally Posted by Jean
Thanks John, I appreciate it. I will take a look at the data. I am interested to know how much faster a car with these heads and 4.0 Ltrs can be, are we in turbo territory? ![evilgrin](https://rennlist.com/forums/graemlins/evilgrin.gif)
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Jean,
Unfortunately the first 4.0 litre engine is in a customers car and we have not had the chance to test it other than on the dyno.
Because of time constraints we only managed to record two runs in each car so the results were using the "best of" feature of the AX22 software although this was carefully checked for each car to ensure that gearchanges were included in the times. From the two runs and one extra standing start the theoretical best 60-130 time of the 3.8 in my RS CS (stock gearing) is 10.0 secs dead, but the best from one run was 10.22sec. Remenber that this was on a totally flat runway tested in one direction only against a slight headwind of around 10-15mph (according to the airfield controller). The weight of the car on the day was 1280kg with lardy driver onboard (
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
In dyno testing the 4.0 litre showed 40-50Nm improvements right across the rev range compared to the best ever pull of my 3.8 when the engine was fresh last year, thus I would guess that the 4.0 could post a 60-130 in the low 9.0s given identical conditions.
#104
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I started to write a long, indignent response to the doubters but in the end, I really cannot be a##ed! I think most people on here are intelegent enough to make up their own minds. However, it does seem to me that some people would need a full vet's report on whether an animal that looks like a dog, smells like a dog, behaves like a dog and barks like a dog really is a dog. Maybe there is a chance its a cat
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#105
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Originally Posted by SimonExtreme
I started to write a long, indignent response to the doubters but in the end, I really cannot be a##ed! I think most people on here are intelegent enough to make up their own minds. However, it does seem to me that some people would need a full vet's report on whether an animal that looks like a dog, smells like a dog, behaves like a dog and barks like a dog really is a dog. Maybe there is a chance its a cat ![Confused](https://rennlist.com/forums/images/smilies/confused.gif)
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