Modifying My Series 3 R31 Skyline

[r31_Bruz]

hay guys i got a stock standard 1989 series 3 aussie skyline executive with an rb30e in it....i am looking at getting some more power out of it and i would just like to know some cheap mods that can be done with effective gains....if you could include prices in ur post that wud be greatly appreciated also..

thanks for ur help.

[Dingus]

Good panel filter, chop a hole into the front of your airbox, exhaust, extractors, advance timing... visit the forums at r31skylineclub.com for more, great bunch of people and very helpful website for R31 information.

[GTS4WD]

slap a 25 head on it

or a turbo..

NA mods are neither cheap.. nor worth it..

Bang for buck.. NA is hopeless..

Edited December 29, 2007 by GTS4WD

[r31_Bruz]

yeah i would do a turbo conversion cept its my first car and new laws...so cant have turbo cars no more! wat is the price range on 25 heads?.... also is a panel filter just a normal filter the same as what they come with stock?

[r31_Bruz]

looking to get an exhaust system for my N/A rb30 am just trying to plan it at the momment...i want to go from 2.25 extractors to 2.5 exhaust right through...

but i need to know what sort of muffler/s and cat system i would need with this setup...

could u please include an over all price range for everything

thanks.

EDIT: also with the extractors does 2.25 inch extractors mean at the flange end or wat?

Edited December 29, 2007 by r31_Bruz

[Eug]

why would you go from 2.25 to 2.50? the exhaust is only going to be as best as its smallest section.

a set of 2.25" extractors would mean the outlet size correct.

i would budget for at least $1000 for a full exhaust.

no one is going to spoon feed you with what and where, not to mention the price. any muffler or cat you want or what you have available. call your exhaust shop and get some quotes.

i will merge both your threads together. please keep it in the one thread.

[r31_Bruz]

okay well yerh ok so 2.5 inch extractors then..with a 2.5 inch system what would be a reccomended cat size?

[Dingus]

If it's manual the 2.5" should be good, mufflers just depends on how quiet/loud you want it to be. Mufflers will be the biggest factor in cost of the exhaust, though you should be able to find extractors and a cat-back cheap 2nd hand on the r31 club.

Panel filter is as you guessed, a filter for the stock airbox. If you get a good flowing one and cut a hole in the front of the airbox to let more cold air flow into it, it'll be better than simply chucking on a pod as sooo many people do. If you just put on a pod without a good airbox setup, then you will just be sucking in hot air, and in most states it's a defect anyway.

25 head is simply not worth it unless you can do all the work yourself and manage to get the bits cheap. RB30DE is cool, but staying n/a the bang for your buck just isn't worth it IMO.

Advance timing costs you as much as a timing light, again worth reading up on it in the tech section of R31SC. Or darkhalf on the club sells remaped ECU's for around $110 plus send back your stock ecu to him, which as everyone on the club will agree are well worth the money.

After that things get expensive and not really worth it. Things like twin cam conversion, or just getting a nicely upgraded cam, aftermarket ECU etc...

[r31_Bruz]

its auto atm..but once i do a few upgrades and all that i will be buying a conversion kit and installing it myself..and with the mufflers im not overly fussed on a super loud car just want something that sounds decent...

with the panel filter some thing lyk a k&n high flow panel filter would be a gud choice? or any1 else got some reccomendations..and instead of sticking a hole in it i was thinking of maybe getting a much bigger air intake snorkle? would this be a good idea..or? also is it possible to fit any sort of air intake snorkle without changing anything else cept maybe rearranging where the snorkle goes..

sugestions please

thanks.

[75coupe]

I don't know where you would find a larger snorkel to fit? you could hunt around some wreckers at other model cars, but I doubt you will find a model with a larger one.

I was looking at this for a 31 and ended up just using a home made enclosed pod filter with large 4" flexible ducting into the enclosure from underneath the front.

save up and buy a better performing vehicle alot lot hassle, or sell this 31 and buy another that has work already done on it...

unless you spend some decent money on it the gains will be minimal... and doing the manual conversion aint that cheap either, finding a gearbox under 600 will be hard then you need the other bits, ie. drive shaft, clutch pedal box, cross member all are wanted bits plus manual ecu possibly...

[r31_Bruz]

i wud just stick a snorkle on from anysorta car was thinkin bout an el falcon snorkle im not bothered bout making sum new holes to screw it down or making the hole in the air box bigger...

thanks for the info on the manual conversion too

[Dingus]

Manual conversion would be a good start, g/box is more like $500, the rest of the bits are easy enough to get through the 31 club. As for snorkel, an R33 one is a lot bigger and would be an upgrade, but always good to have the extra flow from an additional hole for air to enter the air box through.

And don't listen to anyone who bags out the good old 31 or tells you not to waste money on them. I've had a few of them and they really are awesome cars, cheap fun, and tough as, very hard to kill and last forever. If the car makes you happy, that's what matters.