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To install or not to install P600B Procharger on a L98??
Hello Everyone,
Recently purchased a P600B Procharger kit for my ’89 vette with a mostly stock L98. I’ve had some second thoughts about installing it recently since the car’s mileage is relatively high (169,000 as of this weekend). On one hand I want the extra power that the kit should provide but on the other I’d like the motor to last. Anyone have experience with this kit or thoughts in general? Any input is appreciated. :hide: Thanks, Kevin |
Originally Posted by kt22magic
(Post 1592323823)
Hello Everyone,
Recently purchased a P600B Procharger kit for my ’89 vette with a mostly stock L98. I’ve had some second thoughts about installing it recently since the car’s mileage is relatively high (169,000 as of this weekend). On one hand I want the extra power that the kit should provide but on the other I’d like the motor to last. Anyone have experience with this kit or thoughts in general? Any input is appreciated. :hide: Thanks, Kevin dont believe the nitrous companies BS (nitrous is better than a blower becUse its not running all the time). a blower freewheels (causing virtually zero loss on mpg or extra engine wear until you go to wot (loss of vacuum closes bypass valve and now the blower is pressurizing your intake). get in touch with greg at blowerworks |
Originally Posted by dizwiz24
(Post 1592324053)
motor will last fine if you know what you are doing.
dont believe the nitrous companies BS (nitrous is better than a blower becUse its not running all the time). a blower freewheels (causing virtually zero loss on mpg or extra engine wear until you go to wot (loss of vacuum closes bypass valve and now the blower is pressurizing your intake). get in touch with greg at blowerworks So the blower won't pressurize the intake unless you're at wot? Would it make all the additional power at the top end then? Granted I'm new to forced induction but I didn't know that. I'll be sure to reach out to Greg. Thanks again, Kevin |
Not saying you cant or shouldnt but who puts a blower on and doesnt excercise that right foot? Thats a lot of miles, will it last, perhaps.Or not
Your call. So the blower won't pressurize the intake unless you're at wot? Just do it if it goes it was gonna anyway. 350s are cheap Blower are lots of fun |
Run it. If the bottom end goes to **** do a standard 355 rebuild with mild supporting mods for boost. That's what I'd do
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p600b is a great blower for that app.
Its plenty big enough,comparable to a vortech t-trim (not a smaller s-trim). Very reliable. Oil fed (which I prefer). I know because Im running one and theres 60000 miles on my p600b! Its only drawback is its somewhat noisy making a squeal(like a loose fan belt and a jet engine) at idle. Once driving, you hear zero noise (other than a slight jet turbine noise when you get on it and it gets rev'dup or blowoff valve noise. which I think is cool) to avoid pressurizing your crankcase, you need to put a check valve on the pcv valve and possibly any other vacuum valve into the engine Greg @blowerworks knows all the quirks of the l98 (and lt1) to make this work on a c4 vette. How to tune, etc Talk to him! No problems with mild boost/stock bottom end with his setup. WIll last a long time provided its already in good shape |
Thanks for the replies everyone, I have to say you guys have mildly convinced me to continue with the P600b install. 60,000 miles is very impressive I must say.
If i can find the room I may try to pick up a spare L98 and build it for if/when the motor goes. :rock: Anybody have a spare L98 that'd bolt up to a ZF6? |
Originally Posted by kt22magic
(Post 1592336133)
Thanks for the replies everyone, I have to say you guys have mildly convinced me to continue with the P600b install. 60,000 miles is very impressive I must say.
If i can find the room I may try to pick up a spare L98 and build it for if/when the motor goes. :rock: Anybody have a spare L98 that'd bolt up to a ZF6? |
Originally Posted by kt22magic
(Post 1592336133)
Thanks for the replies everyone, I have to say you guys have mildly convinced me to continue with the P600b install. 60,000 miles is very impressive I must say.
If i can find the room I may try to pick up a spare L98 and build it for if/when the motor goes. :rock: Anybody have a spare L98 that'd bolt up to a ZF6? my time table was like this: march 09: bought used p600b kit (for lt1 c4) august 09: got it running and was driving it. put in wideband o2 (in one bank only) to monitor air fuel ratios closely oct 09: realized that i was only getting 6 psi max boost vs 9 when i first installed it. problem was due to belt slip mar 10: greg at blowerworks built me a custom 8 rib dedicated drive bracket for it. jul 10: made 480 rwhp winter 11-12: wanted more power and installed afr 195 comp ported heads. dropped compression to 9.7:1 and put on a smaller pulley for more boost. ditched prochargers restrictive air to air intercooler for just purely meth/water injection may 2012: installed extra gsl392 fuel pump in addition to walbro 255 l/hr pump as insurance oct 2012: dyno'd 510 rwhp at 5600 rpm when i cut it off (to check air/fuel ratios) did not have attempt to run higher rpm as i ran out of time on dyno and another customer was waiting april 2014: installed 2 bar map and converted tune to a tunercat 2 bar map tune. so now i have fueling coming on with boost |
I need some help. I have -86 with L98.
Could someone say the dimensions between the bracket and the head unit? I know there must be some spacers but i don´t know the dimensions. https://cimg9.ibsrv.net/gimg/www.cor...abd3a5f70d.jpg |
Originally Posted by kt22magic
(Post 1592323823)
Hello Everyone,
Recently purchased a P600B Procharger kit for my ’89 vette with a mostly stock L98. I’ve had some second thoughts about installing it recently since the car’s mileage is relatively high (169,000 as of this weekend). On one hand I want the extra power that the kit should provide but on the other I’d like the motor to last. Anyone have experience with this kit or thoughts in general? Any input is appreciated. :hide: Thanks, Kevin My advice-don’t bother. Not worth all the parts needed or the money considering it’ll still be slow. I would either enjoy the L98 for what it is or do an engine swap. |
https://cimg8.ibsrv.net/gimg/www.cor...a6373e5d1.jpeg
Originally Posted by slow_zo6
(Post 1598940046)
years ago I was in similar shoes and decided to install a sc on my L98.
My advice-don’t bother. Not worth all the parts needed or the money considering it’ll still be slow. I would either enjoy the L98 for what it is or do an engine swap. |
Originally Posted by MrBigDee
(Post 1595935915)
Here is my P600B project to my -86 L98 automatic.
First I bought a broken P600B from my friend. Next rebuilding all internal parts. The bearings were totally broken and also impeller shaft was worn. This was start situation. https://cimg7.ibsrv.net/gimg/www.cor...fd2a48b375.jpg Impeller was worn.... https://cimg5.ibsrv.net/gimg/www.cor...d8f9cd114e.jpg next I can see that the shaft was worn out... :( https://cimg9.ibsrv.net/gimg/www.cor...b9484e26ec.jpg The shaft was totally broken https://cimg2.ibsrv.net/gimg/www.cor...cb72377b8c.jpg Next I polished the cases and bracket https://cimg4.ibsrv.net/gimg/www.cor...b43f4d8824.jpg https://cimg7.ibsrv.net/gimg/www.cor...75f79ce886.jpg New items came from superchargerrebuild.com https://cimg8.ibsrv.net/gimg/www.cor...aeca9fcaff.jpg Next, I started to stack up all parts https://cimg1.ibsrv.net/gimg/www.cor...d4b6384e1d.jpg https://cimg6.ibsrv.net/gimg/www.cor...c8f10b58e0.jpg https://cimg9.ibsrv.net/gimg/www.cor...c9931a4b1a.jpg Next a new D1SC billet style impeller https://cimg6.ibsrv.net/gimg/www.cor...146046528e.jpg Enclosure sealing https://cimg9.ibsrv.net/gimg/www.cor...4f5f24789b.jpg Finally I finnished my rebuild.. :):) https://cimg8.ibsrv.net/gimg/www.cor...45e482881c.jpg https://cimg9.ibsrv.net/gimg/www.cor...8a1d96cd53.jpg https://cimg1.ibsrv.net/gimg/www.cor...936a50040d.jpg And here is the current engine room. I need to buy few parts before I can get start installing it. I hope this will help orhers to start rebuild itself. https://cimg3.ibsrv.net/gimg/www.cor...beb08ad290.jpg |
I made my own measurements and next I do the aluminium spacers between bracket and the head unit. Then I can continue my project.
https://cimg2.ibsrv.net/gimg/www.cor...e77701fe49.jpg |
As others have mentioned a high mile engine will suffer blowby which will pressurize the crankcase, that will force oil out the dipstick tube and gaskets.
the front harmonic ballancer and rear main seals especially, that forced me to build a new engine. The engine was pulled at 170,000 miles still ran great but oil leaks were driving me crazy even though the check valves were fitted. I had a vent at dipstick tube and rocker covers to a oil catch can. As long as the blower kit includes a modified chip to control distributor advance with water / methanol injection you will have a reliable setup. I prefer that to the vortech FMU that forces more fuel thru injectors as boost rises. |
What kind of FMU you recommend?
or I'm not really sure I need it at all...what I have heard from others that it does not necessarily have to be at all. |
Originally Posted by MrBigDee
(Post 1598977854)
What kind of FMU you recommend?
or I'm not really sure I need it at all...what I have heard from others that it does not necessarily have to be at all. I found the FMU worked great, have run 8- 10 psi intercooled boost for many years without any issues even on the standard 350 engine. I could run higher boost without an intercooler with the methanol injection setup in conjunction with the FMU and standard rate 24lb injectors. Its ultra reliable and cooler running than just the FMU and intercooler. see below for FMU info. http://legacy.vortechsuperchargers.c...e.php?id=30031 http://legacy.vortechsuperchargers.com/images/71.pdf |
What do you think, can I take oil outlet of that plug into my Procharger?
It is above the timing chain housing. https://cimg2.ibsrv.net/gimg/www.cor...9ed5636161.jpg |
Originally Posted by MrBigDee
(Post 1599028019)
What do you think, can I take oil outlet of that plug into my Procharger?
It is above the timing chain housing. i used the oil pressure switch above the oil filter, fitted a T piece and oil pressure switch on one side and supply to blower the other end. I have a flexible braided oil hose from the T piece to blower oil feed. The oil drain from blower is in the driver side of sump, google vortech L98 instructions online for position to fit the oil return adaptor on side of sump. |
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