UPDATE!!! Pulleys for the 7AFE.. L"@@"K, They are here!!!!! Options

[mandrek]

Though the 7a shares allot with the 4A (FE&GE/GZE), the issue of "performance" pulleys for the 7a is not a set of parts that can be simply ported over.. the alt and the PS pump are the two that i have found that CAN be shared.. but the main one that would benefit of a more light weight pulley, is the water pump pulley. the 4age (easier to find parts for) has a different configuration for how the belts are run to power the water pump.. and there for the pulley is not the same as our 7a's.

well all of this to say that there is a manufactor that has started to make a set of all aluminum pulley for the 7A.. a FULL set yes its in an "E-bay" store, but cant look a gift horse in the mouth...
Here!!! check em out..

this auction is up for 299.. but i had seen em up (for full set still) for 150, and 115... they also have an "OBO" optioin.. i gave it a try and now have a set on its way here...!!!!

i will take and post pix as soon as i get them.. and give review once i get the car back on the road..

This post has been edited by mandrek: Mar 4, 2012 - 1:38 PM

[RobbMeeX]

Man, I can't wait to see those bad boys.

So is there any underdrive to them? I'd also be wary of the undamped crank pulley, but then I'm on a 230k motor, not brand new.

This post has been edited by RobbMeeX: Mar 1, 2012 - 8:05 PM

[mandrek]

Man, I can't wait to see those bad boys.

So is there any underdrive to them? I'd also be wary of the undamped crank pulley, but then I'm on a 230k motor, not brand new.

From what i can tell, there is no underdrive, just a more light weight and cleaner option. ( what i was looking for since this is not an all out race setup ) as for the crank pulley not having a dampener.. well i have not quite decided yet. but think that will not be using the crank just yet.. i have 3 OEM crank pulleys and have picked the one that has the least degradation of the rubber dampener part.. but from the research that i have done, this OEM design of a "dampener" is there to absorb a VERY specific vibration at a VERY specific RPM.. but the design is crap, since that vibration can change due to age of the motor, any modifications done to it. not to mention that the vibration is fleeting.. i know that allot of B18's and B16 have used solid aluminum crank pulleys with out any problems.. but this is not either of those.. i may perhaps not put it on just yet, and when i go to pull the motor later (to drop the beefier internals for the super boost, in about a year.) i'll put this on, since at that time any function that the "dampener" had just went right out the window.. so at that point, any excessive vibrations that would cause damage to the crank , would not be negated by the OEM dampener regardless. and since i also have all of the OEM pulley off ATM i will weigh the combine totals on both sets and post pix and results for everyone.... now just got to wait for the package to get here..

OH YEAH lol .. just seen it was you RobbMeeX.... yeah you will get to see it in person fo sho..

[SwissFerdi]

Very cool, I'll be eagerly awaiting your impression.

[mandrek]

received them earlier today. pix are uploading as we speak.. update to fallow ASAP.

[mandrek]

OK,, so before going into any more information and details, i have to say that one of the pulleys is of a wrong design. the power steering pulley is the correct size in every respect. but the mount on the new unit is a spline drive, where as the OEM (both 95 and 96) is a key drive.. i have already contacted the seller and are awaiting a response with a solution to the issue.

so, here we go.
just as i opened and unpacked the box.


now the only scales that i had to use were some of my dad's kitchen scales. i used the only one that was labeled in pounds. it is not incredibly accurate according to him, but still good enough. i used the same scale for all measurmants and they were all done within and hour, and the temps were the same. (since that would effect the spring)

Total weight of the new pulley set. 2.5 lbs


next up the stock pulleys.


total weight of 7.75 lbs


WOOT!!! a total savings of 5.25 lbs

now for each one..

stock crank: 4.75 lbs


its replacement: 1.125 lbs ish (savings of aprox 3.625 lbs)


then we have the power steering pulley... stock is just under 1.25 lbs


and its replacement is just over .5 lbs for a savings of .75 lbs (ish)


next up is the is the stock alt a just over .5 lbs


and its replacement at .25 lbs for a savings of .25 lbs


and last but not least the water pump... stock = just over 1.25 lbs


and its replacement sitting at .75 lbs for a savings of .75 lbs


and now some comparison pix.









now other than the issue with the spline vs key drive on the power steering pulley, which i hope to have sorted after the weekend. the only other thing that i have noticed when comparing the new aluminum replacements vs the OEM is that the new pulleys seem to be a bit thinner, but i do not think that it will be an issue with alignment of the belts. i will come back to this once the power steering pulley issue has been resolved, and i can mount them all on.

[RobbMeeX]

^Is that just the angle making it look longer?

[mandrek]

hmm perhaps.. ill measure it, when i was taking the pic i was focusing on the depth of the pulley ribs, did not notice that...but i does seem that aluminum pulley is closer to the camera..

[onnaj]

Any news here? I'm curious about how it performens

[rave2n]

Man cannot be fun changing all those..

Interested in performance changes. I assume those are properly balanced?