oil pump gear upgrade

04GTS · Jun 28, 2006

I know prodrive used to make a stronger oil pump gear and that toga is suppossed to come out with one. I was just wondering if this one is the same as the prodrive one ?

http://www.circuitworx.com/products.html
http://www.eliseparts.com/shop/index.php?main_page=product_info&products_id=284

celicajonz · Sep 3, 2006

id be in for a set as well...good luck

redlinee46s3 · Sep 3, 2006

youngxlos said:
is this easy to install?

Not necessarily. You have to remove the valve cover, passenger's side engine mount, alternator, powersteering pump, timing chain cover, and whatever else is around that area. There is also a long bolt that holds the belt tensioner assembly in place that requires you to jack the engine up slightly to clear the frame rails. Then you have to take apart the oil pump and swap gears.

killer2239 · Sep 3, 2006

Does this allow you to use the UR crank pulley saftley? And how much we looking at for this??

Jesse IL · Sep 3, 2006

Monster Hui said:
The new ones have been "redesigned" since the last run of production wasn't quite up to their spec (one of the reasons why they pulled it off the market).

Boy, mine has worked fantastically for a long time.

grumpy said:
I'll be in for 2 sets.

redlinee46s3 said:
I'll be in for two sets as well.

Why? It will never blow up.

killer2239 said:
Does this allow you to use the UR crank pulley saftley? And how much we looking at for this??

Debatable. I've been running a UR crank pulley for a long time, but I have one of the original ProDrive oil pumps. From my own personal experiences, it never caused mine to blow up, and even after spinning a rod bearing, the mains looked fine, but I did have much lower oil pressure than I do on my new engine with MWR rod and main bearings. Don't really know if clearance in the mains or rods was responsible for that, but the rod bearings were not in great shape and wouldn't have been affected by the UR pulley.

vegeta4ss · Sep 4, 2006

i'd definitley take one, whats the pricing?

killer2239 · Sep 8, 2006

Price??

kortik · Sep 9, 2006

monkeywrench · Sep 11, 2006

We've had these on order since the beginning of time. I've checked back every now and then, never any updates. It's good to hear they'll be available again soon.

We'll probably keep running stock pumps in our shop car engines until one blows up because I'm stubborn.

LilRocketSpyder · Sep 16, 2006

I am tired of waiting. I am having a prototype cut next week. If it performs well I will have a run made and will KEEP inventory.... This is silly.

Redliner9k · Sep 16, 2006

LilRocketSpyder said:
I am tired of waiting. I am having a prototype cut next week. If it performs well I will have a run made and will KEEP inventory.... This is silly.

I love u...
:chuckles:

zuoom · Oct 3, 2006

LilRocketSpyder said:
I am tired of waiting. I am having a prototype cut next week. If it performs well I will have a run made and will KEEP inventory.... This is silly.

hi LilRocketSpyder,

you manage to get your proto out?

the reply i got from circuitworx is still no go. i'm actually doing a groupbuy on behalf of the guys in CelicaSG. we have 5 orders that's hanging in the air currently..

regards,

Monster Hui · Oct 3, 2006

the few extra gears they had in stock at circuitworx for the market have been all sold out as of 2 weeks ago... their next production batch should be ~6 months or more

nyoneway · Oct 17, 2006

A few days ago, I blew my oil pump on WOT in 3rd gear lift. Had the UO Pullies for 40k miles now. I guess it was time.

Too bad I sold my Circuitworx pump to Caleb a while ago because it was such a pain to install. I'm down for a 'new' engine and upgrade oil pump while I'm at it.

FITGT · Oct 17, 2006

What do new oil pump gears do for you? and why do you need new ones if you get the pully set?

thanks.

thesup3rfly · Oct 17, 2006

Harmonic vibrations are why you want the new gear. Basically, if you remove the stock pulley, you're removing some sort of damper. The undamped vibrations from the engine at certain RPMs cause excess stress on the pump gear. Upgrading the gear to a stronger material allows it to deal with this increased stress without shattering as the stock one will.

FITGT · Oct 17, 2006

thesup3rfly said:
Harmonic vibrations are why you want the new gear. Basically, if you remove the stock pulley, you're removing some sort of damper. The undamped vibrations from the engine at certain RPMs cause excess stress on the pump gear. Upgrading the gear to a stronger material allows it to deal with this increased stress without shattering as the stock one will.

thanks

Boosted2.0 · Oct 17, 2006

I talked to littlerocket about this a few weeks ago - his CNC shop is still tweaking the process to where the gears get cut properly

Boosted2.0 · Oct 17, 2006

FITGT said:
What do new oil pump gears do for you? and why do you need new ones if you get the pully set?

The stronger gears should eb able to withstand higher RPMs, higher pressures, higher oil volumes, and hopefully not shatter if the pump sucks air from the pan

nyoneway · Oct 17, 2006

Boosted.. I just installed MWR's moroso oil pan prior to blowing my oil pump. I was going slight incline (bridge) WOT on 3rd gear near redline. My oil level was about 3/4 full (check dipstick a day earlier). Do you think the oil-pan change the oil pickup level esp on a incline that may have cause oil starvation?

kortik · Oct 17, 2006

you think that moroso oilpan will solve the probelm?

nyoneway · Oct 17, 2006

kortik said:
you think that moroso oilpan will solve the probelm?

Personally, I thought it would help. But I blew my oil pump shortly after intalling the MWR/Moroso oil pan. Whether it's enough to draw an anecdotal correlation, I don't know.

kortik · Oct 17, 2006

read this Jesse IL had something to say about the moroso oil pam
http://www.newcelica.org/forums/showthread.php?t=224816

FITGT · Oct 18, 2006

Boosted2.0 said:
The stronger gears should eb able to withstand higher RPMs, higher pressures, higher oil volumes, and hopefully not shatter if the pump sucks air from the pan

thanks.

I hope the oil pan was not causeing problems? I do not understand how. I read that fourm.

Boosted2.0 · Oct 18, 2006

nyoneway said:
Boosted.. I just installed MWR's moroso oil pan prior to blowing my oil pump. I was going slight incline (bridge) WOT on 3rd gear near redline. My oil level was about 3/4 full (check dipstick a day earlier). Do you think the oil-pan change the oil pickup level esp on a incline that may have cause oil starvation?

Its possible - the sump is very long front to back - if its not baffled front to back then I could definitely see all the oil running to the back of the sump and exposing the pickup. If it was a long incline the return oil might have just been going to that part of the pan. Do you habe pics of the inside of the pan and how its constructed?

nyoneway · Oct 18, 2006

Yes it was on a long incline. I figure that plus high acceleration push enough oil back esp when level is not full for it to pick up some air.

oil pump gear upgrade

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