2002 Xkr 4.2 mated to a 5sp auto?
Is this possible? I thought when engines moved from 4ltr to 4.2, gearboxes moved to 6spd auto? Or was there a period with 4.2 and 5spd auto?
Thanks!! |
My understanding is that the 4.2 engines were mated to the ZF 6HP26 transmission from day one of production....
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^^ +1
The 4.2 motor may mechanically fit the Merc. transmission, but I suspect you would run into comms issues between engine & trans control modules |
Originally Posted by dizzly
(Post 2096712)
Is this possible? I thought when engines moved from 4ltr to 4.2, gearboxes moved to 6spd auto? Or was there a period with 4.2 and 5spd auto?
Thanks!! |
Hi!
In the United States, a 2002 model year XKR will have a 4.0L from the factory, not a 4.2L, It should have the Mercedes 722.6 aka W5A580 5 speed. The 5 speed Mercedes unit was/is one of the most robust transmissions coming out of europe. If I owned a 2002 XKR, I wouldn't bother trying to fit a 4.2L engine in it. If power is concern, do some pulley swaps, improve the cooling, upgrade the intercooler pump, and have fun. If it's because mechanical failure, the older 4L lump should be cheaper anyway. |
Originally Posted by dizzly
(Post 2096712)
I thought when engines moved from 4ltr to 4.2, gearboxes moved to 6spd auto? Or was there a period with 4.2 and 5spd auto?!
|
Mistery solved!
I was given wrong info. It was in fact a 4.0 after all.
Thinking of swapping my '98 xk8 4.0 for this '02 xkr 4.0 Worth the hassle? Thanks guys!! |
Originally Posted by dizzly
(Post 2097171)
I was given wrong info. It was in fact a 4.0 after all.
Thinking of swapping my '98 xk8 4.0 for this '02 xkr 4.0 Worth the hassle? Thanks guys!! |
Originally Posted by dibbit
(Post 2097175)
Everything else being equal the XKR is going to be the faster, more reliable car - how much is that worth to you? Once the tensioners have been upgraded (and the very last of the 4.0 cars had the latest versions) your 4.0 XKR is going to be every bit as reliable as the later 4.2 cars.
Really the complications you get from an R car combined with the overall improvements make it hard for me to recommend a XK8 4L car since the reliability improvements in the near same price range used 4L XKR make the car cheaper to own long term overall. They are just too close in price right now. On top of that, the R model has significantly more scoot. |
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