Rb30 Into Vl With Rb20

[poeticjustice88]

I have a vl with an rb20det. Was wondering if the 30 would drop straight back in or if there would have been mods done to it to fit the 20 that I would have to reverse

[Ben C34]

engine mounts are the same. Probably your loom has been modified for the rb20 that would need to be changed back.

[luke gtr]

and exhaust, and cooler piping.

[Frosty]

depends on if you are going to run single cam or twin! if your converting back i'd say 25head on the rb30 and run a new loom. Rest is pretty straight forward

[poeticjustice88]

I know the cooler pipes and zorst would need to change. But I am not worried about that. Just the big stuff like actually fitting. The loom I also knew.

I want the 30 back, not sure if going 25 head or not. A lot of power can be made with just the sohc.

I just wanted to see if anything like mounting points would have been changed to put the 20 in. So that I know what I need to change back.

However. If I am going throigh all this trouble, would it be worth it more to just drop in a 25? Or does that involve custom work and different mounts?

[*LOACH*]

You are probably going to be a lot better off asking this question on calaisturbo.There is a wealth of VLs with 20/25/26 and SOHC/DOHC 30 knowledge there.

Another thing to keep in mind with a DOHC 30 is that not only do you have more power potential with an unmodified head but you don't have to worry about warped/cracked SOHC heads. In addition if you get the VCT working on an RB30DET the torque is improved all over the rev range.

I would twin cam mine but it is a reasonably rare car and I don't want to mod anything that can't be undone with a minimum of fuss. To do a twin cam it is probably better to move the idler pulley which involves drilling the block for the bolt - simple enough and not entirely necessary but I don't want to risk blowing the engine by having the timing belt fail, nor do I want to drill a hole in the block of my relatively original car.

Edited July 11, 2013 by *LOACH*