IT HAS BEEN DECIDED ... Im going to pull out my blown VG30ET:bash: and replace it with an RB30 out of a skyline (not VL:nono. what I need to know is will the engine bolt straight onto my 5 speed turbo box or will it need an adaption plate, secondly how close will the RB30 engine mounts match up to the VG30ET mounts will i need to adapt them too?? Im also going to :br:turbo charge:br: the RB30 before i start to mount it. Has anyone else on this site done it?? If so what problems am i going to encounter ??
Nissan produced a few 200zr's (essentially a z31 powered by an rb20det). You might be better off trying to source a front crossmember from one of these as the rb30 should bolt straight in then without modification. I'd doubt the vg30 box would bolt straight up to an rb30, you're probably better off getting an rb20 gearbox as they are fairly cheap and with the correct gearbox crossmember (again probably out of a 200zr) will probably bolt straight in. Have you considered building a 25/30 instead? Basically an rb30 bottom end with an rb25 dohc head. To handle the power you'd probably need to go to an rb25 gearbox though.(same as a z32 box, just different bellhousing. physically larger than an rb20 box so will probably need a custom gearbox crossmember made up)
Ive heard of the 200zrs ive only ever seen 2 or 3 for sale ..they are even rarer so theres not much hope of finding spare cross members. As for making a 25/30 i just want the car running again to start with and id proberly try to go a 26/30 instead. Ive been thinking last night this morning about transfer plates to bolt the rb30 to the vg box ... i do have a good engineering place i know so engine mounts and that arnt much hassle
No, the gearbox will not bolt directly up. Depends on the gearbox but IIRC, VG30et's have either a Nissan Z71 box or a BorgWarner T5 stock and neither are particularly tough. The BW is known as handling LESS abuse. You could find a buggered Z71 off any "L" series Nissan (RB30 block has a standard "L" series bellhousing bolt pattern) or later SR20 or RB20 and fit the bellhousing to your existing z71 but youll need to use the larger input shaft bearing that these later boxes use. Other than that, its plain enough sailing. Unless you can find an R30a transmission out of a VL-T (best of luck as rare as rockinghorse shite now) then your options are to fit up a later series Z71 which sits on the back of every RB20. These are a dime-a-dozen and have the shifter integral with the box, unlike the SR20 Z71 where the shidter is remote like a Z32. Youll have to slightly egg out the two top bolt holes on the bellhousing but the dowels and lower 4 bolts all line up and starters all work. Another less donme option is an R30a out of a Nissan Patrol with the 4wd transfer case removed. Has been done but i dont know whats involved. Or source an R30a transmission from an RB25 rwd Skrine. Once again the bellhousing top boltholes will need egging out a couple of mm. This is the preferred oiption if you are going to abuse it but these tough boxes are getting thin on the ground now and good examples are commanding 1 large and up. As far as turboing a VL, you be better off to just buy an existing RB30et and freshen it up and everything is done for you. I dont think Ill be sticking my neck out here by saying that your going to have to fabricate custom engine mounts but these are simple to make. Have you given any thought to fitting a VG30det? These are much the same as a VG30dett with some minor differences and a single T3/T28 turbo and are available quite cheaply? Look quite similar to your old single cammer and age-wise, no dramas so legality is no issue. Will bolt straight to your existing box but will require some chicanery with flywheels to get the stock starter to work. Engine mount bolt holes are in the same position on the block but the stock engine mount brackets will need some massaging to fit the slightly different bolt hole spacings is all. There you go!! E
if the box is a 71c it will with a bell housing from a rb series gearbox as there also a 71c. t5 will not work without new clutch etc, other boxes that will work RB20det, rb20de, rb30et, some rb25de boxes. as for the engine you will need a crossmember from a 200zr or a custom one, the sump will also need changing to rear feed and so will the oil feed in the sump.
yeah dont really like that idea, its still $2400 for those motors So basicly i only paid $1800 for the car so i dont really want to end up spending huge money on rebuilding it. Ive picked up a second Z :zlove: with a VG30 in dark purple. so my plan eventualy is to rebuild my blown turbo motor then do a switch into my newer Z because it is in really good condition. where as the blown one wasnt that good, i can get an RB30 from a skyline for $300 turbo set up $200 and gearbox $200 so it really brings my costs down and the RB motors are like lego parts interchange easily. its gona be my mod car Ive decided to pull the turbo box out as well and throw an RB30 box in instead .
$2400??? Baaaahahahahahah Not a twin turbo m8, a single turbo out of a Y31 Cima/Lepoard. Someone trying to touch you for 24 hundred should also be attaching the entire front cut and organise a couple of polishes as well.!!! I have two of them and I paid 350 and 375 respectively, both turnkey engines. Try Ichiban in Sydney. E
Make sure its the VL-T box (R30a) Stock VL is a 71 box and the same as what you already have. It will work ok but youll kill it if you drag race it. E
$2400... tell them they're dreaming. I sold one many years ago for $700 with a stash of spare parts i sourced. Paid $600 for it initially. Who ever you're getting your pricing from needs a reality check. 25/30 combo would be good. Cheapish to accomplish too. And a box should be affordable as well. The rest is just fab work. Not much if youre handy.
