I have a 2003 mazda bongo commercial van but first gear is way to low and 5th gear revs really high at 100kph I have been told to get a new diff head which should speed both up my question is what ratio do I have and what ratio do I need I have a 1.8 petrol manual
lookoutas,
Feb 7, 2:06am
You'r gunna have to find out your diff ratio. Maybe off your ID plate, and use Google. Wouldn't pay to move too much with low power. Say you have a 3.7 - don't go much taller than 3.5.
Have you got room to try a higher profile tyre on the back! Go to your tyre shop and ask them to put a couple of scubbers on so you can try it.
paul861,
Feb 7, 2:11pm
i have a 91 ish bongo deseil truck to scrap. motor is nearly buggered ,but the rest is good. dont know the diff ratio tho. been offered $350 for it as is.
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