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-   -   87 GXL NA buildup (https://www.nopistons.com/2nd-generation-specific-17/87-gxl-na-buildup-5367/)

pengaru 09-17-2002 11:40 AM

http://pengaru.com/~swivel/cars/rx-7/09-17-2002



Items pictured include:

New series 5 NA front and rear housings, street ported

New series 5 turbo rotor housings, street ported

New series 5 turbo intermediate housing, street ported

New series 5 NA rotors

New hardened stationary gears

Oil metering pump drive shaft/gear removed from front cover, will be using

premix exclusively. Oil passage in front housing which provides oil flow to front cover oil metering pump passage tapped and plugged (blurry pics).

Oil injector bosses plugged with equivalent bolts

Aux port actuators removed, shaft bushings and shafts removed also, considering grinding down raised area in port runner where bushing would normally protrude, and filling in open area with jb weld or maybe have a welding shop do it.

Also purchased but not pictured are the S5 NA counterweights, new oil pump drive chain, gasket set, rotor kit, weber jets for eccentric shaft oil jet mod. More to come https://www.nopistons.com/forums/pub...DIR#>/wink.png I think I paid mazdatrix' rent for a month or two.



I will probably pick up another NA LIM and run with aux ports later, I just want to get some dyno time with this setup and see how much of a difference it makes.

RotaryManRX7 09-17-2002 02:06 PM

All I have to say is wow, that is a lot of new parts. That sounds like the same motor that I just built, but I didn't use all those new parts. Looks nice.:-)

pengaru 09-17-2002 03:19 PM


Originally Posted by RotaryManRX7' date='Sep 17 2002, 08:06 PM
All I have to say is wow, that is a lot of new parts. That sounds like the same motor that I just built, but I didn't use all those new parts. Looks nice.:-)

How much power is your setup producing?

RotaryManRX7 09-17-2002 03:49 PM

I am not sure yet. It runs but it isn't streetable yet. I have a leak in the intake and I think it is a warped intake manifold a guy sold me so I have to go back to my old one which is a S4 so we will see after I break it in.

pengaru 09-17-2002 04:19 PM


Originally Posted by RotaryManRX7' date='Sep 17 2002, 09:49 PM
I am not sure yet. It runs but it isn't streetable yet. I have a leak in the intake and I think it is a warped intake manifold a guy sold me so I have to go back to my old one which is a S4 so we will see after I break it in.

Sure you didnt miss one of those vacuum nipples? https://www.nopistons.com/forums/pub...DIR#>/wink.png S5 UIM has quite a few.

ikrazygluebrokenapexseals 09-17-2002 04:25 PM

the VDI extension manifold interferes with the S4 rear side housing near the clutch inspection plate. i had to grind down the cast iron a bit with a dremel to make mine fit.

ikrazygluebrokenapexseals 09-17-2002 04:27 PM

by the way, since i bitch about off topic posts... nice parts, swiv https://www.nopistons.com/forums/pub...DIR#>/wink.png

vosko 09-17-2002 10:13 PM

looking great!!! you are doing things the correct way. nothing is better than NEW https://www.nopistons.com/forums/pub...IR#>/smile.png congrats

pengaru 09-18-2002 01:44 PM

hrm, I'm considering holding off on my NA buildup until I pay off some of these bills and buying ceramic apex seals and running the uprated apex seal springs. Any thoughts?

vosko 09-18-2002 01:53 PM

why bother with ceramic. i would run mazda 2mm or hurley 2mm


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