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Thread: G Spec VVL Crank Pully + High HP + High Revs = Fail...

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Posts: 61-70 of 83
2009-06-26 18:36:58
#61
All I can say I am very confident that my problem was caused by the pulley period...
I never with this motor had any kind of problems while I was using the VE OEM pulley...
2009-06-26 18:37:07
#62
Originally Posted by SE-Rican
How many of you guys are running VE oil pumps on your DE's?

Also how many of you have built VE blocks?


I'm running a VE pump on my DE. Had to buy a GTi-R pick-up tube from a fellow forumer out of Arizona, IIRC. Weren't any GTi-R or VE pick-up tubes available @ GSpec at the time.
2009-06-26 18:57:20
#63
Seems like the hole swaping of spacers and what not is a pain in the ass. That is why I chose to just stick with a VE block for my build.

Is the G-Spec pully a solid piece pully or does it have rubber in it like the OEM? I honestly have never seen one in person nor in a pic.
2009-06-26 19:06:08
#64
Originally Posted by BenFenner
The problem exists with any pulley. It's not the pulley that is the problem, it is the spacer.

It is still a good idea to run a VE oil pump on a DE. It is still a good idea to run a G-Spec crank pulley on a DE. The spacer's original purpose was to allow those with DE's to run Greg's VE pulley (probably so he could save himself the effort of making two different pullies). This way his VE pulley because universal.

It's all still a good idea.

Just make sure that if you run a VE oil pump that you make sure you do it right. That's always meant getting a VE crank pulley (or equivalent aluminum pulley) and either the longer VE oil pump drive, or a spacer for your DE oil pump drive. It just means that you have to make sure if you don't buy the G-Spec kit, and piece it together yourself using the G-Spec spacer, that you get a spacer that's been modified. Greg knows about the problem and isn't selling the old spacers anymore, so there shouldn't a problem there. If for some reason you come across an old spacer, or are thinking about making your own, just make sure you make it so it matches the shape of the oil pump drive. If it doesn't, when you tighten down the crank bolt, it pushes the pulley and spacer into the oil pump ruining it. This is because the VE oil pump is maybe 10mm deeper than the DE oil pump. It sticks out farther and gets crushed by the spacer.

It will all be clear and make a lot more sense once I get some pictures I have hosted. Maybe wait for that. =/

Again, it's not a bad idea to do the VE oil pump, or anything like that. We just need to make sure we avoid this minor problem that at least two of us have ran into.


^Well I talked to you about this before. I planned on buying the VE kit that comes with everything (NEW AND IMPROVED spacer/oil pump drive which ever people want to call it) the GSpec crank pulley to put on my DE block. $500 for a JDM DE + $350 for a zero mileage VE oil pump still comes out less expensive than VE, but I want get the better VE head. I'll just have a worked highport head with my S4's to do the trick.
2009-06-26 19:15:49
#65
Originally Posted by SE-Rican
Is the G-Spec pully a solid piece pully or does it have rubber in it like the OEM?
It's solid aluminum. No rubber. No harmonic damping properties. Greg has pics of it on his web site, and there's a thread about the timing marks on it floating around that has pics of it. I have one I'm selling soon which I have pics of.
2009-06-26 19:16:26
#66
Originally Posted by Payu
All I can say I am very confident that my problem was caused by the pulley period...
I'm very curious as to why you think this.

Originally Posted by Payu
I never with this motor had any kind of problems while I was using the VE OEM pulley...
Is this the only reason you have to think the pulley was the cause?
2009-06-26 19:35:47
#67
Originally Posted by BenFenner
It's solid aluminum. No rubber. No harmonic damping properties. Greg has pics of it on his web site, and there's a thread about the timing marks on it floating around that has pics of it. I have one I'm selling soon which I have pics of.



I say that on a high whp motor a pully with a dampner is a must. Especially if it is being revved high or not. Hell the stock SR20 is internally balanced and they still add a pully with a dampner.
2009-06-26 21:53:26
#68
I had same problem a few years ago and thought it was because I used an old oil pump drive on a brand new pump. It was a Pulsar pump with a used pulsar oil pump drive and the Mossy performance Pulsar pulley. Sometimes the oil pump drive starts to loose the edge on the flat spots, which I think can cause it to crack the pump gear by actually spinning inside the gear itself. I'm not sure that's what happened but I noticed my pump drive was worn a little after I pulled everything apart. It also could of happened after the pump failed. I'm still using the Mossy (G-spec) pulley and it never happened again.
2009-06-26 23:53:34
#69
I am 100% sure it is not the pully. I say it was the configuration of the setup that went wrong
2009-06-26 23:57:35
#70
Originally Posted by SE-Rican
Seems like the hole swaping of spacers and what not is a pain in the ass.


Not really. If you get the VE Pump "KIT", you have nothing to worry about. Swapping the drive spacer is as simple as removing the key from the keyway, and pulling the spacer right out.
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