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mq diff upgrades

Tech Talk for Nissan owners.

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mq diff upgrades

Post by troopy94 »

Im part way through building a suzuki lwb truggy with mq patrol diffs.I have h233 and h260 rear diffs and was wondering if the extra strength of the h260 would be needed because using this diff i lose alot of clearance under the centre.The drivetrain is a commo v6 with turbo 700 auto then into twin transfers.Id also like to know if there are any upgrades for the c200 front diff.Any ideas or suggestions would be very appreciated
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Post by macca81 »

the h233 will be fine in a zook. as for the c200, IF, and its a big if, if you can find a lsd for it, it would be worth putting in. they had c200 rear diffs in some of the MQs in europe which had lsds in them...
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Post by WICKED »

Shave the H260.
Lock both of them.
GQ Cv's in the C200 front.
Limit Steering a little.
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Post by troopy94 »

thank you for the replies i have an auto locker for the c200 front diff and the rear will be welded.I wasnt sure if gq cvs would fit in the mq housing so i guess that means i can also upgrade to cromo cvs for a gq if i start destroying the standard ones.
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Post by WICKED »

troopy94 wrote:thank you for the replies i have an auto locker for the c200 front diff and the rear will be welded.I wasnt sure if gq cvs would fit in the mq housing so i guess that means i can also upgrade to cromo cvs for a gq if i start destroying the standard ones.
STD GQ Cv's will fit but the Chromo one wont. They are a larger Dia than standard and are too big for the MQ/MK Housing Knuckles/swivel balls. GQ just fit in MQ/MK.
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Post by troopy94 »

Ok thanks so then the next best option would be to get standard gq cvs treated for extra strength
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Post by WICKED »

troopy94 wrote:Ok thanks so then the next best option would be to get standard gq cvs treated for extra strength
Correct
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Post by SWBMQCraig »

So will gq cv'sl just go straight in a mq? i had the understanding from a mate that the gq cv's were stronger because they were bigger and there was some modification that needed to be done to fit gq cv's.. is this true and how hard is the modification?

Cheers Craig
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Post by WICKED »

They go straight in (well they did for me) you'll need the lockign ring/hub so you can match the spline on a GQ cv but that's it.
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gq cv's

Post by A.R.T Racing »

They go straight in, i've been running them in my MQ diff for years. Just put the GQ cv on a MQ axle. Plus change the spline inside standard nissan free wheeling hub as Wicked said.
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Post by troopy94 »

how much stronger would the gq cv be compared to the mq or would it just be easier to get the mq cvs heat treated
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Post by WICKED »

troopy94 wrote:how much stronger would the gq cv be compared to the mq or would it just be easier to get the mq cvs heat treated
CV, a fair bit but cause its the same axle it just goes then.

Treated mq's are like $100 less then Treated GQ's. Just do the GQ's man
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Post by mifo_2000 »

looks like im going gq cv's!

one question tho!

How do your get the cv seperated from the axle? i thought they were pressed on fukn tight
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Post by David_S »

mifo_2000 wrote:looks like im going gq cv's!

one question tho!

How do your get the cv seperated from the axle? i thought they were pressed on fukn tight
One way I have found that works most of the time is to stick it vertically in a heavy vice with the CV at the bottom and then to give it a hefty belt with a 4lb hammer. Anyone know a better way?

So if I read this thread correctly the GQ axles/CVs will fit the MQ provided you replace the conical gear which connects the axle to the free wheeling hub - the bit the Nissan parts book calls a "Clutch assembly - drive" - because the end splines on the GQ axle are different to the MQ?
1982 Patrol K160 SWB (MQ) 4L P40 Petrol with Megasquirt fuel injection and EDIS ignition. Warn 8274 winch with Gigglepin head
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Post by RMP&O »

David_S wrote:
mifo_2000 wrote:looks like im going gq cv's!

one question tho!

How do your get the cv seperated from the axle? i thought they were pressed on fukn tight
One way I have found that works most of the time is to stick it vertically in a heavy vice with the CV at the bottom and then to give it a hefty belt with a 4lb hammer. Anyone know a better way?

So if I read this thread correctly the GQ axles/CVs will fit the MQ provided you replace the conical gear which connects the axle to the free wheeling hub - the bit the Nissan parts book calls a "Clutch assembly - drive" - because the end splines on the GQ axle are different to the MQ?
yup correct and you leave out one small axle c-clip at the free wheeling hub.
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Post by David_S »

Thanks RMP&O

Never knew what good that circlip did anyway - except to make you cuss when trying to put it back on.

David
1982 Patrol K160 SWB (MQ) 4L P40 Petrol with Megasquirt fuel injection and EDIS ignition. Warn 8274 winch with Gigglepin head
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Post by RMP&O »

David_S wrote:Thanks RMP&O

Never knew what good that circlip did anyway - except to make you cuss when trying to put it back on.

David
no probs....

it is a good mod to the front diff in an MQ, C200 is a bit small. I got some built GQ CVs in mine and also the GQ F/W hubs. Never have come close to breaking a CV and I have flogged it pretty hard. You can break anything though, just depends how you drive it.
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