R33 Rb30 Conversion

[discopotato03]

SK , I like the idea of the RB26 head . Better cam profiles , larger valves (by how much I don't know) better and lower inlet manifold , common injector style . Was the RB26 head difficult to come by , obviously it was not cheap . I assume it can use the single turbo exhaust manifold plus coils and ignitor .

Thanks SK , A .

[discopotato03]

Drunkenmaster , later I will look into a 3.7 or 3.5 ratio long nose R200 . Going from 2 litres to 3 should pull this easily . From memory VL's used a 3.45 std with a 3.3 1st gear (NA) .

[drunkenmaster]

which car are you using to require a long nose R200?

know of any for sale at a reasonable price?

[Skyrine-Dave]

i'm interested in more info on these long nose r200 lsds

[drunkenmaster]

They'd be of interest if you own a 240Z/260Z, 280zx, 1600, Z31, DR30, or import R31.

Basically the newer R200 found in later skylines is too short for our cars.

Back on topic though, so with the 3.0L is worth dropping to say around a ~3.5 LSD you think without harming accceleration?

Would probably sit on nice low revs on the freeway I suppose.

[Skyrine-Dave]

They'd be of interest if you own a 240Z/260Z, 280zx, 1600, Z31, DR30, or import R31.

Basically the newer R200 found in later skylines is too short for our cars.

Back on topic though, so with the 3.0L is worth dropping to say around a ~3.5 LSD you think without harming accceleration?

Would probably sit on nice low revs on the freeway I suppose.

looks at my signature:

HR31 GT Passage Skyline

i think i've got 4.4's as my car was once auto and i was wondering how they would affect the 3L and its power out put. I think the 4.11 and 4.4's are in place to make the non torquey RB20 feel punchy and quick, but what will happen once the 3L with mountains of torque goes in? will the tires light up too easily?

[Bl4cK32]

it sits nice and low in the rev range with the std r32 4.3 lsd....dont worry about extras unless its a) got to be sorted in a custom job (like drukenmaster), b)your old diff is rooted.

I always see people asking about big arsed turbos, injectors etc....how about people worry about building the motor, fitting it and getting it running......

[drunkenmaster]

 

I always see people asking about big arsed turbos, injectors etc....how about people worry about building the motor, fitting it and getting it running......

I will be fitting my solid fuel lines down the length of the car tonight, followed by the adjustable suspension during the week. Now it is easier to fit the diff and the rear suspension at the same time as they share mounting points, and I need to fit my new suspension in order to fit my modified front crossmember. Now the front crossmember will need to be in so I can fit my modified engine mounts to it, and those mounts will have to be there to sit my RB30DET on.

So sorting out a diff for me to pick up now is crucial to getting my RB30 fitted and running :wassup:

:jk:

[Sydneykid]

Drunkenmaster , later I will look into a 3.7 or 3.5 ratio long nose R200 . Going from 2 litres to 3 should pull this easily . From memory VL's used a 3.45 std with a 3.3 1st gear (NA) .

Be careful, VL's came with 185/60/15's, compare that to my GTST with 245/45/17's, this turrns the 4.363 dif ratio into a 3.9.

[drunkenmaster]

Interesting....at this point I will take any long nose R200 LSD I can find, but swapping gears might be on the cards down the track if it proves unsuitable.

I think a 3.9 will do the job nicely.

[Sydneykid]

Drunkenmaster , later I will look into a 3.7 or 3.5 ratio long nose R200 . Going from 2 litres to 3 should pull this easily . From memory VL's used a 3.45 std with a 3.3 1st gear (NA) .

Be careful, VL's came with 185/60/15's, compare that to my GTST with 245/45/17's, this turrns the 4.363 dif ratio into a 3.9.

[predator]

drunkenmaster: for ref.. pintara gears are always a cheap source of 4.11's crown and pinions...

[discopotato03]

DR30 , uses longnose R200 std is 3.9 . Can someone tell me what valve sizes in RB26 and if ports/stud patern on exhaust side same as RB20/25DET .

[fatz]

pinny automatic rear end welded up is a very cheap source of acceleration

[Sydneykid]

Can someone tell me what valve sizes in RB26 and if ports/stud patern on exhaust side same as RB20/25DET .

No, this is like Groundhog Day. Nissan don't want you swapping GTR bits onto cheaper cars, so they designed it so it was different.

[Bl4cK32]

Can someone tell me what valve sizes in RB26 and.......sorry SK

[Alf]

Hi,

I'm new to the forum and must say that this thread is oustanding, credit goes to everyone who has contributed.

I recently picked up a r33 GTST with a blown bottom end and after reading this thread i know what bottom end i'll be using.

I have purchased a GT3040 (0.82 exh ) to go with the new engine.

I have a question.

What parts will fit into the RB25DET head from a GTR head?, I have read in another thread that it's possible to use GTR cams in an RB20.

[Cubes]

There is a bloke on calaisturbo that has measured up the gtr valves.

[geordie]

It seems alot of the pictures that have been posted earlier in this thread (ie: pages 5 etc) are no longer working, could a admin person check this out?? PLZ??

[Wes M]

I got my block last week and after removing the head gasket noticed that there was a '2' stamped on each of the pistons and next to each cylinder on the deck. Is this an indication that the cylinders have been bored? The hone in the cylinders is pretty good considering the engine has 200,000k on it