Page 1 of 1

4.2 diesel & 4.2 petrol diffs

Posted: Fri May 14, 2010 12:32 pm
by johno
Are these the same. Just picked up a 97 GQ water damaged at auction and will be bringing home with me my 4.2 diesel turbo and gear box. Just wondered if the diffs in this late petrol would be ok, save stacking my diffs in container

thanks
John

Posted: Fri May 14, 2010 4:33 pm
by ashnbowiev8
Normaly diesel diff centers ar 4.1 ratio ad petrol centers are 3.9 ratio

Posted: Fri May 14, 2010 6:49 pm
by johno
What would be the prefered diff then powered by the 4.2 diesel turbo? Mostly road use,not real tough 4wding

Johno

Posted: Fri May 14, 2010 8:13 pm
by turps
4.1. I dont think you would wanna go any faster than that. Patrols dont go slow enough as it is.
Also theres a good chance that the ratios will be the same. Have alook on the compliance plate. Next to the trans code there will be a code that starts off with a HG???????
HG39 = 3.9:1
HG41 = 4.1:1
HG43
HG46
HG35 (gu petrol auto)

If both engines where 4.2lt and manual. Then the ratios are likely to be the same.

you get the picture. There where no other factory ratios.

Posted: Sat May 15, 2010 9:50 am
by johno
Turps
Thanks mate, will check when it comes home next week. There sure is a lot of storm damaged patrols at the auctions at the moment

Johno