3.8 engine conversion where to buy????
#32
Getting back on track with the discussion, Colin, are you saying that your heads won't work with a US-spec 993 in street trim, or just that they won't be optimized because of the engine management? (The idea of bolt-on heads/cams for extra HP is intriguing to me...esp. if it's just a top end rebuild.)
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Originally Posted by Jack of Hearts
Getting back on track with the discussion, Colin, are you saying that your heads won't work with a US-spec 993 in street trim
Unless one is of those who think that everything that Porsche did was strictly to sell more and keep their engineers busy to maintain their products fashionable 10 years later The 3.8 "factory" upgrade certainly seems to yield good results and buck for the money. A gearbox change is also a good way to bring some good response to those engines, only I am not sure it improves straight line performance from point A to B like the 3.8.
Reynard, if you want names of competent top end builders in the US, I am sure many Listers can help you out.
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Originally Posted by N51
Then why do you introduce Loren into the discussion?
This is a discussion in regard to the merits of a 3.8 engine. You chose to use it as an opportunity to advertise your heads. You chose to introduce the work you had performed on a 964. You asked where my numbers came from. They are from you. You own them.
For the record, I consider Loren a valued member of Rennlist - one whose knowledge and honesty is appreciated. I'm always searching for knowledge. But it is not I who need lessons in honesty.
Noah
This is a discussion in regard to the merits of a 3.8 engine. You chose to use it as an opportunity to advertise your heads. You chose to introduce the work you had performed on a 964. You asked where my numbers came from. They are from you. You own them.
For the record, I consider Loren a valued member of Rennlist - one whose knowledge and honesty is appreciated. I'm always searching for knowledge. But it is not I who need lessons in honesty.
Noah
Since I freely give away information, never spin data to suit my needs and always quote numbers based solely on my personal experience, can you please explain what lessons in honesty that I have to learn, I am intrigued?
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Originally Posted by jdistefa
Speaking of bolt-on heads... Are these worth looking at? Experience, comments... Colin? Steve W?
http://www.cmwmotorsports.com/store/...category_1.htm
http://www.cmwmotorsports.com/store/...category_1.htm
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Originally Posted by Jack of Hearts
Getting back on track with the discussion, Colin, are you saying that your heads won't work with a US-spec 993 in street trim, or just that they won't be optimized because of the engine management? (The idea of bolt-on heads/cams for extra HP is intriguing to me...esp. if it's just a top end rebuild.)
#39
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Colin:
With respect to this forum and thread, I'll take my reply to you in private.
To the original topic of this discussion:
Geoff,
While you are correct in your calculation, the accompanying increase in compression should bring the total gains very close to my previously stated ~5.6%. That brings an otherwise stock 3.6L(282hp) close to 300hp and a nice increase in torque. I agree - that's a small number on paper, with a large investment. But I would return to my prior thought that the 3.8L is a sound platform for other engine work. That increase in displacement and compression is a multiplier(that's the key) for everything else one may do: valves, cams, porting, exhaust, etc. That is where the real fun begins, and yes,- before you add it - it gets even more expensive. :-) It's not for everyone, but for those of us willing to take on the financial side of the equation, we'll have our rewards.
Best,
Noah
With respect to this forum and thread, I'll take my reply to you in private.
To the original topic of this discussion:
Geoff,
While you are correct in your calculation, the accompanying increase in compression should bring the total gains very close to my previously stated ~5.6%. That brings an otherwise stock 3.6L(282hp) close to 300hp and a nice increase in torque. I agree - that's a small number on paper, with a large investment. But I would return to my prior thought that the 3.8L is a sound platform for other engine work. That increase in displacement and compression is a multiplier(that's the key) for everything else one may do: valves, cams, porting, exhaust, etc. That is where the real fun begins, and yes,- before you add it - it gets even more expensive. :-) It's not for everyone, but for those of us willing to take on the financial side of the equation, we'll have our rewards.
Best,
Noah
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Noah,
All the very best with your 3.8 ( 3.7 ? ). As human beings we all have a different take on this stuff. I am more interested in raising bottom end torque
for highway cruise without touching the motor. Cars got too much top end for here anyway !!
Look foward to reading your " WOW " posts !
Geoff
All the very best with your 3.8 ( 3.7 ? ). As human beings we all have a different take on this stuff. I am more interested in raising bottom end torque
for highway cruise without touching the motor. Cars got too much top end for here anyway !!
Look foward to reading your " WOW " posts !
Geoff
#41
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Originally Posted by Red rooster
Noah,
All the very best with your 3.8 ( 3.7 ? ). As human beings we all have a different take on this stuff. I am more interested in raising bottom end torque
for highway cruise without touching the motor. Cars got too much top end for here anyway !!
Look foward to reading your " WOW " posts !
Geoff
All the very best with your 3.8 ( 3.7 ? ). As human beings we all have a different take on this stuff. I am more interested in raising bottom end torque
for highway cruise without touching the motor. Cars got too much top end for here anyway !!
Look foward to reading your " WOW " posts !
Geoff
Next time our paths cross, be sure to save a few moments for beating about torque enhancement ideas on the VRam: top end ponies are of far less utility than smooth and ample torque delivery on these particular roads.
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I am not sure why we think the 3.8 will increase the top end and not the area under the curve when it is rather the opposite, judging by the performance. Now, the 3.8Ltr with a nice varioram intake (or there are other options out there) is a great plus for sure. I would just make sure that my tuner knows what he is doing and balances it all correctly.
#43
I think if you want a faster car, you jack up the gas cap and drive a faster
one underneath it. Like the man said, for that kind of money you can buy a turbo.
one underneath it. Like the man said, for that kind of money you can buy a turbo.
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Originally Posted by N51
Colin:
With respect to this forum and thread, I'll take my reply to you in private.
To the original topic of this discussion:
Geoff,
While you are correct in your calculation, the accompanying increase in compression should bring the total gains very close to my previously stated ~5.6%. That brings an otherwise stock 3.6L(282hp) close to 300hp and a nice increase in torque. I agree - that's a small number on paper, with a large investment. But I would return to my prior thought that the 3.8L is a sound platform for other engine work. That increase in displacement and compression is a multiplier(that's the key) for everything else one may do: valves, cams, porting, exhaust, etc. That is where the real fun begins, and yes,- before you add it - it gets even more expensive. :-) It's not for everyone, but for those of us willing to take on the financial side of the equation, we'll have our rewards.
Best,
Noah
With respect to this forum and thread, I'll take my reply to you in private.
To the original topic of this discussion:
Geoff,
While you are correct in your calculation, the accompanying increase in compression should bring the total gains very close to my previously stated ~5.6%. That brings an otherwise stock 3.6L(282hp) close to 300hp and a nice increase in torque. I agree - that's a small number on paper, with a large investment. But I would return to my prior thought that the 3.8L is a sound platform for other engine work. That increase in displacement and compression is a multiplier(that's the key) for everything else one may do: valves, cams, porting, exhaust, etc. That is where the real fun begins, and yes,- before you add it - it gets even more expensive. :-) It's not for everyone, but for those of us willing to take on the financial side of the equation, we'll have our rewards.
Best,
Noah
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Colin,
I guess another take on this is that the 3.8 gives an opportunity to correct the compression ratio ! It must be well known that the 11.3 number is very much a maximum for an untouched motor ?
Over here where fuel quality is not as good as Europe I would think that very careful thought needs to be given to desired static compression, cam profile used etc,etc to arrive at a dynamic compression that is ok for the avaiable fuel ?
As soon as you start modifying all these questions come flooding to the forefront ! Part of the fun ??
Geoff
I guess another take on this is that the 3.8 gives an opportunity to correct the compression ratio ! It must be well known that the 11.3 number is very much a maximum for an untouched motor ?
Over here where fuel quality is not as good as Europe I would think that very careful thought needs to be given to desired static compression, cam profile used etc,etc to arrive at a dynamic compression that is ok for the avaiable fuel ?
As soon as you start modifying all these questions come flooding to the forefront ! Part of the fun ??
Geoff