Gtr - new stronger frame vs older frame ??
Discussion
all very interesting, iam building mine on the old frame, i got it 6 months before the change over, which is a little pissing off, but that's life lol
seems like alot guys like to crash there gtr's lol, iam now getting worried iam building a death trap lol, iam going for the 700 ls7 engine, so not looking good for me lol
dave
seems like alot guys like to crash there gtr's lol, iam now getting worried iam building a death trap lol, iam going for the 700 ls7 engine, so not looking good for me lol
dave
Pedders said:
I'm also building on the older chassis, having bought it before knowledge of the changeover. With the important caveat that I don't really know what I'm talking about... my guess is that no longer providing the option of the removable chassis bracing over the engine bay is one of the biggest contributors to increased rigidity of the new chassis.
The chap who put a BMW V12 in his ultima, did some really interesting testing on the chassis and where and why it flexed, with some basic changes making a big difference if I recall - I will see if I can dig out the link but I know it has been posted on this forum a number of times before.
I'm pretty sure my driving ability is no where near exploring the differences between old and new chassis, but for the fun/challenge of it, and once the build is suitably progressed, I would be interest in exploring additional bracing - particularly if it could be added without welding to the chassis.
very interesting, i also thought at a later date, maybe add in some extra bars like they have and also weld up the engine bay barsThe chap who put a BMW V12 in his ultima, did some really interesting testing on the chassis and where and why it flexed, with some basic changes making a big difference if I recall - I will see if I can dig out the link but I know it has been posted on this forum a number of times before.
I'm pretty sure my driving ability is no where near exploring the differences between old and new chassis, but for the fun/challenge of it, and once the build is suitably progressed, I would be interest in exploring additional bracing - particularly if it could be added without welding to the chassis.
but like u say, we will never explore the car anywhere close too knowing a difference
cheers
dave
Racing Roj said:
Guys
For those who are still building just something to think about.
Despite the saying 'there is no substitute for horses' you can have too much power to drive your Ultima hard even if you go on the track.
You need a standard engine where possible, ie. no high lift cams etc to make it tractable as you will spend over 90% on the road.
Remapping is possible but there can be problems with emissions and passing your MOT when it's due.
I know some will say its about how you use your right foot.
Even if you have had some racing experience or some serious trackday time, with more than 550hp and the low weight of the car in my opinion this is more than enough for most of us to get the best out of the car.
The car I bought has an LS7 and has been remapped to 600hp and the emissions are very high so I have a problem at MOT time.
I would have been happy with the 505hp out of the crate.
I await differences of opinion.
Roj
very good point and i think you are 110% correct, but my heart whats 700 bhp lol, so that's what it will get lol, mad, but that's what makes me feel alive being scared to drive a very fast car lolFor those who are still building just something to think about.
Despite the saying 'there is no substitute for horses' you can have too much power to drive your Ultima hard even if you go on the track.
You need a standard engine where possible, ie. no high lift cams etc to make it tractable as you will spend over 90% on the road.
Remapping is possible but there can be problems with emissions and passing your MOT when it's due.
I know some will say its about how you use your right foot.
Even if you have had some racing experience or some serious trackday time, with more than 550hp and the low weight of the car in my opinion this is more than enough for most of us to get the best out of the car.
The car I bought has an LS7 and has been remapped to 600hp and the emissions are very high so I have a problem at MOT time.
I would have been happy with the 505hp out of the crate.
I await differences of opinion.
Roj
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