26dett into R32 4 door

[scj91]

Requirements for conversion?


any problems that i'd encounter? going into a 4 door 20det manual

[Evilteddy]

Doing gearbox as well?
If so, what gearbox?

I did a 25det conversion to my r32, things i encountered.
Gearbox crossmembers has to be modded, tailshaft had to be lengthened, wiring loom had to be re-wired(Althought depends if you're going to a rb26dett from an r32 or not). plus a few other little bits and pieces that would probably only effect a rb25 conversion.

[TJ]

Need a custom sump as the 26 sump is 4wd as well. Biggest issue really.

[scj91]

Yes,unsure on gearbox,forgive me im a jap amateur haha.
been told you can do the gtr box they can be done for rwd? i thought they were all made for rwd and transfer case was the thing that sorted out awd?

So far from what i've looked into it's pretty straight forward,like any typical motor conversion,the engine mounts line up...from what i've read.

[Alt_F4]

Box choice... 20 will die, 25 is great, or you can mod the 26 box (all this assumes your running RWD, and not a AWD 32)

If you haven't sourced the engine yet, aim for a 33R/33R engine, assuming you not building the engine straight away.

If you've got time up your sleeve, it'll be worth your time to go thru the SAU Modifications & Maintenance forums, all the info is sitting there :)
This will get you started http://www.skylinesaustralia.com/forums/Rb20-Rb26-Conversion-92-t238563.html

[scj91]

I was actually looking at webbs 34r long motor - turbos and plenum.

But by the looks of what i need,it's much easier to buy a whole 33r front cut

[Alt_F4]

Tell the truth, I reckon rb30e bottom + 32 rb25de / rb26dett head + RB25DET gearbox would get you to funsville alot easier + cheaper.

[AD4M]

sump needs to have the diff chopped out and the holes welded up in it few hundred bucks there not a major job at all.

while its out you might aswell do a tomei sump baffle kit and a new oil pump, its worth while to check the condition of the big end bearings while its apart.

wiring loom is simple you can use the stock rb20 loom if you wanted to go a wire in ecu or one that use's map sensors. otherwise the r32 rb26 loom clips straight in and you can use the stock gtr ecu or power fc. you'll need the injector resistor pack wired in somewhere if you choose to do that as it runs on a seperate loom to the motor.

cooler piping you can use the std GTR gear or aftermarket jap kits, id personaly just go custom with the yen the way it is you'll probly end up at the same price

gearbox swap is fairly simple if your using a rwd platform its easier to just use the r33 rb25det box, use the r32 crossmember and weld some tab's onto it so all 4 bolts can be used (it falls short at the front and needs about 1.5 inches added, the rear bolts fall into the front of the crossmembers pre drilled holes)

tail shaft can be the stock one modifed with an r33 yoke
I sufferd a failure due to the stock centre bearing colapsing on the 2 peice shaft and ended up just going single peice, luckily i found that out after the conversion befor it got abused

if your going to buy nates 34 motor, they run a diferent cas/plug too a 33/32 motor. you will need the loom modded to suit the 34 plug which is easy. just one of those things that might catch you out during the conversion

[Denver]

if you can locate an auto s13 box cross member, it bolts straight up to the 25 box, think its an auto box, someone may be able to confirm here..

[scj91]

Aight,well this is a bit of a bonus,found a cheap 33 4 door with mods.

So i'm going for that now

Which solves gearbox issues,do i now need to add them tabs onto gearbox crossmember with a 33? i'm trying to do this build as budget as possible,not cause i'm low on money,just gives me spare money for fuck ups.

Been told new turbo's are a must as well?

[AD4M]

nah no need to do anything to the box now!
should do a twin plate clutch behind it, i wouldnt bother with anything less

new turbs arent a must, if your getting a 34 motor they have good turb's on them from factory. not monster power units but alot better than 33/32 stuff

but if you are eventualy going to chase power than its ALOT easier to do the turbs befor you slot the motor in with a set of -5 2860 garrets or hks gt ss

[DISTRBD]

I was actually looking at webbs 34r long motor - turbos and plenum.

But by the looks of what i need,it's much easier to buy a whole 33r front cut

Speak to MrMayhem if you need a cut , looking at doing 26 convo myself n he been very helpfull..

[scj91]

Sweet added him then!


This is panning out quiet simply!


Hopefully it goes in practice like this haha

[DISTRBD]

Easy fit into pintara :wiggle:

http://i2.photobucket.com/albums/y1/lysdexia/GTS1/DSCN1544.jpg

[scj91]

Seems to be easy fit into anything that already has an rb it haha

[DavoEvo]

I think cost is the only real draw-back.. with falling prices in a slowing market you can get into the real thing.. but if you wanna be unique, its a nice exclusive thing.. just be prepaired 4 lots of angle grinder work and spaggetti wiring... mmm conversions r fun

[DISTRBD]

just be prepaired 4 lots of angle grinder work and spaggetti wiring... mmm conversions r fun


Angle grinder for what ?? and as for spaggetti wiring .. this is our end result below ( looks alot better in person )

http://i2.photobucket.com/albums/y1/lysdexia/GTS1/29122008008.jpg


Im thinking pintara wagon with 26dett for my next venture :naughty:

[scj91]

I think cost is the only real draw-back.. with falling prices in a slowing market you can get into the real thing.. but if you wanna be unique, its a nice exclusive thing.. just be prepaired 4 lots of angle grinder work and spaggetti wiring... mmm conversions r fun

Yeah im lost!

by the looks of things it's plug in plug out!


It's not a carbied 6 cyl to a EFI LS1 Conversion ahaha

[scj91]

Just double checking.


Wiring harness from 25det still usable on the 26?

Or do i have to get a 33 gtr wiring harness?

[DISTRBD]

NO

[scj91]

Aight just clarifying,33R Harness is needed?

[mitchy]

Angle grinder for what ?? and as for spaggetti wiring .. this is our end result below ( looks alot better in person )

http://i2.photobucket.com/albums/y1/lysdexia/GTS1/29122008008.jpg


Im thinking pintara wagon with 26dett for my next venture :naughty:

now mine looks inferior. :(

[TJ]

Yeah but your not mega bucks like Bart

[mitchy]

we're not fancy, but we're cheap! :lol:

[DISTRBD]

Yeah but your not mega bucks like Bart

LOL its Wills cars n cash .. I was lucky to purchase the red car as it wasnt good enough

Out with the old n in withthe new


http://i2.photobucket.com/albums/y1/lysdexia/GTS1/DSCN1550.jpg

[Alt_F4]

Aight just clarifying,33R Harness is needed?

If using a 34R engine on 33/32R, you need to change the CAS.
Might be easier to get a 32R loom, plus the 32R ecu is upgradable, whereas the 33R ecu isn't (interchangeable tho)... thats if your not going aftermarket.

[scj91]

Going after market,and going into a 33 4 door now,not going 34r engine.

[scj91]

Could i possibly use 25det coil packs on the 26dett?

Don't see why not,just the motor im buying is less coil packs,so eh.

[MrMayhem]

33 packs are weak, the 26/20 ones are a better coil, find another set

[scj91]

aight cheers

[scj91]

another question.

What could i harvest some lower ratio gears out of for a R32 diff!

3.5/3.2's would be good.

[mitchy]

the 34 gtr's had 3.4's i think, due to the 6 speed.

[MrMayhem]

the manual 33 diff ratio is 4.11 same as a 5 speed gtr, if you want to do a swap for somethign with a faster turn the auto 33 is a 4.3

the 34 gtr can use the taller ratio as it matches the ratio spread of teh 6 speed getrag

[scj91]

not worried about matching ratios,more after just that little bit more length in gears

[RRob]

S14 auto is 3.9 and heard rumours manual is 3.7.

[Tocchi]

are pintara gears the same as skyline ones?

cos if so, falcon ones are the same, slap some 2.92s under its ass.
got some length in gears then!