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help needed with conversion please

Tech Talk for Nissan owners.

Moderators: toaddog, V8Patrol

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ron
Posts: 39
Joined: Fri Aug 06, 2004 9:03 am
Location: south east qld

help needed with conversion please

Post by ron »

hi
at the moment i have an mq patrol with aP40 motor and a 5 speed manual.

i would like to change it to an rb30.

will my currant box fit the rb30?
what else do i need to do?

thanks
ron
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ron
Posts: 39
Joined: Fri Aug 06, 2004 9:03 am
Location: south east qld

Post by ron »

hi

can a l28 fits my MQ?

would the box + transfer case be the same?

cheers
ron
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Posts: 542
Joined: Wed Apr 28, 2004 10:28 am
Location: pomona,sunshine coast

Contact:
Contact GRINCH

Post by GRINCH »

are they a divorced tranfer in your model, if so you could just use a vl box and make a shaft betwwen the 2 or if yours isnt divorced maybe you could look at getting one, i havnt had much experiance with mq's so these are only sugestions i dont know if they will work or not.
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Post by not not »

Sorry guys but the divorced transfer only came out in the L28 wagons.
In the patrol range
Twenty4-7 Rock Racing
#247
http://www.mickeythompsontires.com.au/index.htm
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Joined: Sat Dec 10, 2005 10:26 pm
Location: North Qld

Post by jcclures »

Why are you taking out the p40 motor?
1986 Nissan MK Deluxe, 1uzfe quad cam V8, Bull bar, Thomas Winch
Super Oscar Spotlights, Sliders with Body lift, And Long-range Fuel Tanks.
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ron
Posts: 39
Joined: Fri Aug 06, 2004 9:03 am
Location: south east qld

Post by ron »

getting very hard to find parts for the p40
or another 4 speed box to suit

do you have any you dont want?

cheers
ron
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Posts: 89
Joined: Sat Dec 10, 2005 10:26 pm
Location: North Qld

Post by jcclures »

I just gave my brother a hand to rebuild his mk with the p40. It was not that expensive to rebuild with new oversized pistons rings and bearings, the timing gears are no longer available and very hard to get a water pump.
We had my mate get a new cam, one to give it some more pulling power, he ported the head and shaved over 1 mm of the head to give it more compression, converted the valve seats for led free with a set of extractors. The old Nissan never pulled like now, 5th gear over the Desailly Range going to Cooktown, which is a good hill to test it on, anyone going to Cooktown would know that range. He is running the 4.6 diffs.
1986 Nissan MK Deluxe, 1uzfe quad cam V8, Bull bar, Thomas Winch
Super Oscar Spotlights, Sliders with Body lift, And Long-range Fuel Tanks.
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Location: In a horse near you

Post by chimpboy »

Ron,

I personally would much rather have an MQ with a P40 than an L28. Anything spent on that conversion would be better spent on doing things to the P40, imho.

As for the RB30, you would probably be best trying to find an RB30 with five speed and transfer case already attached, and bolt all of that in, then modify the driveshafts to suit. But again, I'd probably rather just keep the P40 if it already has a five-speed. It has more power and more torque than an RB30, and is much better suited to 4WD applications.

In answer to your other question, the gearboxes will not just swap between the L28 and the P40 motors.

Jason
This is not legal advice.
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