25/30 Combo In A 32 4 Door

[MYP16]

can anyone shed some light on this ??

seems there are a few ppl having same prob

im sorry if this a repost but i couldnt find any info on how to make it work

its rb30 block rb25 na r32 head and 26 cam covers (cam covers are causing problems)

[Phobic]

why do you want to put 26 rocker covers on a 25? so people think you have a 26?

[MYP16]

they look alot better than a 20 or 25 rocker cover, look so much more modern and iv got a clear cam gear cover to go on aswell

[bubba]

They also have better breathing and you can fit things under them like the Tomei cam baffle kit etc.

MYP16, I raised the back of my bonnet 10mm which helped some, aswell as rearranging the pipework over the engine and losing the stock bov.

[R32 Driver]

get a forward facing plenum or mod your current one

the 26 covers will always be in the way of the cross over pipe

[bubbabooga]

i think he means his cam covers are fouling on the bonnet??

if so have ya tried cutting out the bonnet supports under neath the fire blanket thing

ha

[MYP16]

yeah thanks for ur help guys but yer it hits right at the front of the covers and cam gear covers meet, fouls by quite a bit so raising the bonnet wont help and i dont really wanna cut my bonnet as its a gtr bonnet , any other engine mounts that can be used?

[bubbabooga]

modding the factory engine mounts to lower the motor..

heard of some people doing that by up to 16mm drop

[Dahtone Racing]

ive seen a couple of spacers between the engine cross member and chassis sort out the issue

[bubbabooga]

http://www.skylinesaustralia.com/forums/Bo...se-t219307.html

whole thread on bonnet clearance issue's...

[MYP16]

yeah will prob have to do that i reckon, about to speak to my fabricator

thanks again for all your help guys

will spacing the crossmember from the chassis alter any settings on car or bother suspension etc?

[bubbabooga]

possibly change gear box and tail shaft angle slightlly.

which could wear out tail shaft uni joints a touch quicker....

i wouldnt worry about that to much tho..

id rather have a bonnet that close's.

haha

[bubba]

My bonnet closes and I haven't done anything drastic like change engine mounts or space the crossmember. You just have to be smart with the piping..

That being said, my bonnet does rub on the intake manifold which will be solved when the forward facing plenum goes on, then it will only rub slightly on the timing belt cover backing plate..

[MYP16]

its not a piping issue i have not even mentioned piping

[bubba]

I really don't see how your bonnet can't "close" then, mine hits the timing belt cover backing plate and the intake manifold but it still "closes".

Before I changed the piping setup and removed the stock bov it wouldn't "close", it barely grabbed the safety latch and sat up 4" on one side.

[raZ1911]

So whats it hitting on the top of the motor? its THAT high?

[bubbabooga]

i think he means the backing plate behind the cam gears is hitting his bonnet.

im hoping i dont need any mods to lower my motor in my cefiro

haha

[bubba]

I still don't understand how that would prevent the bonnet from closing.. there is a distinct difference between bonnet rubbing on stuff and not closing..

[MYP16]

ok the bonnet is not on car yet as the motor is still being built but the block and head are dummy fitted in the car so i sat the cam covers on and wen ya kneel down beside the car and look across it from guard to guard they r sitting up by more than an inch

but i spoke to my fabricator last night and he is gonna lower engine mount brackets etc and make the f**kers fit

Edited October 17, 2008 by MYP16

[GTS4GuY]

clearance issues must have something do to with the R32 4 doors.. im having the same problem with my GTR bonnet hitting the front cam gear cover, tryed spacers at the back but doesent help