Rb26/30 Bonnet Clearance...

[Marko R1]

hi guys,

ive had to cut the underside bracing on my factory gtr bonnet to accomodate for my new rb26/30, it just fits luckily enough

im thinking about getting an aftermarket carbon bonnet which has more clearance or those large vents to allow a better fit...does anyone have experience with a particular aftermarket bonnet which gives good clearance for the extra 38mm?

i was also thinking of spacing the rear of the bonnet which would help with engine bay heat but i dont really like that look (reminds me of the A9X Torana from the 80's)

thanks,

marko

[jas/slo32]

also seen people slot the engine mount brackets to lower the engine

im having a carbon bonnet made but no time soon

[STATUS]

ive had to trim a few of the carbon vents as they fouled pretty bad.

[Adriano]

Yep, carbon bonnets are heaps worse for fitment, and you cant slot the mounts in a gtr

[jas/slo32]

Yep, carbon bonnets are heaps worse for fitment, and you cant slot the mounts in a gtr

ok both 26/30s ive done are gtst i cut both bonnets that were on my car

[Marko R1]

i was told not to slot the engine mounts as well, geometry of cv's etc will be out!

what is touching is the intake hard pipe which has the 'twin turbo' badge on it above the low mount turbo's - i might just need to take off the twin turbo badge & ground off the boss it sits on...i was hoping a carbon bonnet would give better clearance but i think i better stick with the factory bonnet

[bubba]

i was told not to slot the engine mounts as well, geometry of cv's etc will be out!

You can't slot them on a gtr as with the sump adapter there's not much room left to the crossmember.

[Marko R1]

^ this is true ^ another reason not to touch the mounts

im thinking maybe i get a small custom bulge to give it more room, any recommendations or is this a dumb idea being an alloy bonnet?

how about a sleek bonnet scoop - do these exist for the r32gtr?

[bubba]

I have thought about a bulge before but because I have a GTR bonnet on my GTSt, I'm afraid that as soon as I touch that bonnet with any sort of heat (cutting/grinding/welding) it will just warp

[Marko R1]

i wish there was a slimline bonnet scoop on the market - made of carbon & only about 1 inch in height

[bubba]

Scoop or bulge?

[GT-RZ]

Plenty of bonets to choose from with a slight bulge isn't there? i know there is more for the silvia than i care to look at.

[Adriano]

You can buy add on ba xr6/8 style bonnet bulges

[Marko R1]

any links to the bonnet bulge u are talking about?

[Angus Smart]

Hey Marko, this is what i have done to my 32, however it does not have a rb30 but would without a doubt accommodate one with out any problems

You can kinda see the cutout section in the second photo.. sorry i dont have any others at this time.

[Marko R1]

where did u get the bonnet done & how much?

is the bulge alloy welded?

[Sydneykid]

I have always redrilled the holes in the engine mount where it bolts to the block, around 8 mm from memory. That's about all I could get with a 4wd sump adaptor and a larger sump. I simply lowered the engine on the jack until it touched the subframe, up a little bit, then mark the engine mounts accordingly.

Let's face it drive shaft angles suffer much worse when you lower the car 40 mm and that affects both front and rear, in comparison 8 mm at the front only is no big deal.

Cheers

Gary

[Marko R1]

good point gary

[N1GTR]

Marko ive already told you who to call to get around this issue. I told you about 12months ago.

Also, if you did a search you'll find a thread by me about bonnets, i tried already to just get a CF one, none of the ones i found fit without changing/modding the mounts

[bubba]

Hey Marko, this is what i have done to my 32, however it does not have a rb30 but would without a doubt accommodate one with out any problems

You can kinda see the cutout section in the second photo.. sorry i dont have any others at this time.

Bit OT, but how do you find that air-thru headlight?