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Crank + Oil Pump

Turbz_13

By Turbz_13,
in Engines & Forced Induction

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Turbz_13 Experienced

Turbz_13

Posted
Posted

Now I have a rb26 with wickid inturnals in it but it is out of an older R32 GTR so it has the crank with the small oil pump drive and a new standard oil pump on it.

To change this stuff to an R33 Crank and say a Trust/Jun/Nismo etc oil pump will this require the engine to come out? or can I get away with takin the sump and other things below the engine? Although the bearings are new, these will have to be changed as well as the crank was ground down slightly. Also with this all need balancing again??

Cheers for any help/info

James

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Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

its a engine out and crank out of engine deal because you have to machine down the surface to fit the crank collar.

RAJAB told me he never does the collar upgrades on his cars because he thinks the reason why this happens is because of crank float or something similar.

I still think its good insurance and i did the upgrade on my engine.

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T04GTR Grand Master

T04GTR

Posted
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yeah the vl uses a steel gear that runs on the crank. then onto the sinterd ones.

but its harmonics that kill the pumps. that and to tight bearing clearances.

so yes. almost a full engine strip to do it. ether way the motor has to be on a stand.

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SilverECR33 Veteran

SilverECR33

Posted
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crank will definently have to come out, But wont need balancing again. as for the bearings. well you should change them, but i guess if your careful enough, ;you could possibly reuse them, although a few people may dissagree with this, and of course it isnt the best suggestion.

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Turbz_13 Experienced

Turbz_13

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thanks guys

i knew that i had to change the crank...i was wanting to in the start! also with the oil pumps im looking at the should fit over the R33 GTR drive nicely!! Im NOT putting a collar on the crank(early R32 GTR) if i dont have to as i would prefer to pay the cash and buy a new crank!

i will have to replace the bearings if i replace the crank as the crank i have now has been ground down!

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted
Now I have a rb26 with wickid inturnals in it but it is out of an older R32 GTR so it has the crank with the small oil pump drive and a new standard oil pump on it.

Question

Why do you have "wickid" internals in a motor and no crank collar, and still using a stock pump ?

Doesnt make sense to me.

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rob82 Mentor

rob82

Posted
Posted
yeah the vl uses a steel gear that runs on the crank. then onto the sinterd ones.

but its harmonics that kill the pumps. that and to tight bearing clearances.

so yes. almost a full engine strip to do it. ether way the motor has to be on a stand.

How do bearing clearances kill oil pumps? Or are you refering to crank end float as in thrust bearing clearances.

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Adriano Grand Master

Adriano

Posted
Posted
Question

Why do you have "wickid" internals in a motor and no crank collar, and still using a stock pump ?

Doesnt make sense to me.

NOt meaning to be rude, but there have been lots of built motors in gtr's come over from japan that end up being stockx, without proof of internals i would be suspect unless you have good reason.(Heaps of these cars have had 800hp even 1000hp turbo systems on stock motors)

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Turbz_13 Experienced

Turbz_13

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i have proof as i have like all the recipts for my engine rebuild!

it is a long story as to why the std oil pump was used! lets just say i cant be bothered explain it to you guys, but one thing was i didnt give them a clear intension of what i wanted!!. i am now running eagle rods and acl race pistons and i see the only weak link being that oil pump and crank, wouldnt you say? well maybe the gearbox but a ppg box will fix that so will a triple plate clutch but we are in the wromg section to cover that stuff

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proengines Rising Star

proengines

Posted
Posted

Unless you had another reason I wouldn't be pulling it out or apart. A collar or 33 crank is a good idea as part of a rebuild but a lot of money if you're paying someone to pull the engine out and strip it just to do that. If the oil pressure is ok I'd leave it as it is and pay a couple of grand extra on the mortgage or a holiday.

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