GTS_Retro

I can recommend Tonsley Crash Repair on South Rd StMarys, they are happy to track down hard to find import stuff to do the job properly. They found 1st series Hr31 tailights from japan for my job

yellow pages! just phone around for quotes, easy.

I bought the same one, find you have to flick thru most pages to find what you need, sometimes i miss it and have to look thru a few times.lol got it for $40 from memory. has a maroon s2 r31 on the front. i wouldnt mind having a look at the 25 one, i need spec on head for when i pull it apart. i could scan the pages you need and PDF them if you want to do a swap?

Any idea on what kw it made?

Well my initial plan was to go turbo i have the 25mani and turbo. but i just wanted the simplicity of NA. I thought 160kw more guts from down low and throttle responce would still make some fun in the 31. Im still open to beeing talked into turbo.. So what ecu would people reccomend to use as i have just read that the 33 can not be retuned,, is that correct?

cheers buddy, thinking now that i might go two tone. bottom half black to match wheels. also inhance the old school look.

Gonna run standard R33 ECU and on 98RON petrol. Im using; RB25DET head, RB30e Block, RB30e Pistons. This should give an approx CR of 8.3-1 Just not sure on head gasket, will prob use a RB30 I will have the block shaved to Xmm to increase CR. My question is how many Xmm to shave to increase CR to a good level for NA. taking into account pump fuel and standard ECU?

Old pic. only change is ride height and front spoiler.

What would a more realistic CR for a NA be? I was thinking of leaving the VVL head functional. I reasearched the 26 ITB set up it would be definatly the top choice, however i would like to get the engine together then look at more development in the future. for now sticking with a custom plenum and single TB.

Just a quick intro on my ride http://www.skylinesaustralia.com/forums/Hr31-Gts-t228525.html I have been reading thru this section and partly thru the (167pages of the r33 rb25-30) thread for a few weeks, I have been inspired to do something different with my car. At home in the garage I have a R33 S2 RB25DET and a R31 S3 Rb30E I want to build a 25-30 NA, to plonk into the HR31. I need some recommendations on building a high compression NA hybrid. What I plan for the block so far, full strip down clean etc. hone, new big end bearings main bearings, if in good condition re use rods, new bolts etc. but unsure weather to use rb30 pistons, balance crank. Basically give the block a freshen up. Need some advise on combination of OEM pistons to use with head gasket to get a high CR (9:1 or close?) for throttle response, head shaved etc. There seems to be so much wealth of knowledge and experience here any help or tips is much appreciated.

The story so far… I currently own an 86 Hr31 coupe, sporting a RB20DET NICS. Purchased back in 05. The poor old NICS is a solid reliable runner, I couldn’t fault this engine. Reliability was a major factor for me and I found this engine was great, Serviced myself. I stood steadfast that it would be maintained un modified. I loved the car for what it was, even choked by the tiny turbo. Now that my daily driver is a mighty corolla, the Skyline is enjoying retirement and some needed surgery. The surgery; Turf the old and in with the hybrid Rb25/30, Ok so this is what I have so far 1 x Rb25DET out of a S2 R33 1996 1 X Rb30e out of a S3 R31 1990 What I had envisioned was to run the Rb25-30 NA. What I want is more torque, throttle response and a soundtrack from the NA out the back! Reasons for not going turbo, $$$$$$ and unusable power for a car that doesn’t hit the track, drift or drag.

There would be some serios number crunching to determine runner lenght then, if they are tuned specificaly to head setup. Definatly a job for profesionals. Ive seen the video mentioned white 32 in japan. girl tuner, she used http://www.twminduction.com/ThrottleBody/2000_inst.html ITB's adapted to her RB24de. runner lenght looked really short in the video, might be because of the adaption she made, however from memory it only liked revs above 5000 from memory.

I have oftern though about doing something alike, but 25/30 with ITB. Just wondering how do you calculate runner length? is it base on throttle diamiter.

Hi all, its time to rebuild my rack, the dust boots are full of fluid. I am having the rack professional rebuilt. However I have heard the R31 rack has an inherent leaking problem, have the rack rebuilt and in no time it springs a leak. Apparently the rack can be modified so this dose not happen again. Anyone able to tell me what is modified so i can have the same changes made to my rack. cheers

nice bonet, 2 pac on the bonnet locks black. they are the only feature letting ito down. 2 pac its a lot more resistant to wear.