will a holley and a set of extractors help my rb30

g,day everyone,ive owned my gq for a few months now and have slowly been sorting her out so me and the missus can do a bit of travellen,camping and general malarky,ive just about got my campertrailer sorted as well,when the q is towing the trailer its a bit underpowered,when its by itself its not too bad..idd like just a little more,my soninlaw ses by a vl and take the fuel injection off it and put on the rb30..i really couldnt do this myself as im a bit crook and not gettn any better.the motor at present is totally stock,im thinking maybe the cheapest way out of it is to put a set of extractors and decent system and a holley 350 or a 500,has anyone done this and does anyone think that it will give me that little extra power?i only tow the campertrailer with it and i want to do some dirt roads,beaches etc,no major off road stuff,she runs petrol and lpg..would the power be anywere near the power if i was to put the injection on her,,any info would be greatly appreciated,,not really wanting to do the turbo thing...

If you change the carby and put extractors on you will probably use more fuel. The injection is gonna net you good gains and will out do the carb and extractors. As the ijection is mad for these motors if you get all the right parts everything just bolts on. Costwise if you shop around doing the injection may be similar to yoour other mods.

forget the holley.
waste of money.
wear out to easy.
you will have tuning issues till it finally kills the motor.

RB 30, injection, and maybe a turbo bolt on way better than holley.

good luck

Quote:

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Originally Posted by Robo

forget the holley.
waste of money.
wear out to easy.
you will have tuning issues till it finally kills the motor.

RB 30, injection, and maybe a turbo bolt on way better than holley.

good luck

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A Mate has put a holley on his RB30 GQ manual and it goes really, really well. Holley do a 330 that is made for 4wd applications as a standard 350 holley is more prone to stalling on inclines. He had no tuning issues at all.
As nissannewby said above, it will use more fuel with a holley and extractors.
Having said that, my mate is in the process of putting an efi kit on and then later, a turbo. Again, as nissannewby said, the efi (and turbo) upgrades on the RB30 are probably the easiest efi and turbo upgrade you can do as all the parts can be sourced cheapely and easily from secondhand VL motors. Buy a good cond VL efi engine (and computer) and it will have all the parts to upgrade.

thanks for the replys there fellas,,really greatfull for that,,im going to chase up a vl comm and go with the injection mods..thanks again.

Ok if you serious then here's the calc to work out carby size.

cubic capacity ( inches ) x max revs div by 2.
this give you cubic inches of gas per min.

divide this by1728.
will give you cu/ft per min.

3Lt = 183cub/inches.
according to my favourite conversion link.
183 x 6000 div 2= 549000 cub/inch gas per min.
549000 div 1728= 317 cu/ft.
a 350 holley is to big and will drown you engine for max 6k revs.
I know 317 to 350 not much but that s the figures for 6k rev
you would need a 317 or say 300 holley.

7000k rev limit is 370 holley.
but these are figures you may not be doing and again you drown the engine in fuel.
if you over carb an engine fuel droplets appear and drown things.
its that simple.
hope this helps
cheers

the main reason I meantion holley waste of time is there construction not built to last.
ie leak around butterfly for example and so on.

Quote:

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Originally Posted by Robo

the main reason I meantion holley waste of time is there construction not built to last.
ie leak around butterfly for example and so on.

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yeah thats probably true. I know two people with them on their GQs but neither have had them long enough to see any premature wear. Holley isnt the highest quality thats for sure!
I had a 350 holley on a holden 202 (3.3 litre). It had a lumpy as cam and would still have power up to 7500 rpm.
The 330 holley kit is designed and manufactured for the RB30 engine in 4wd applications. (it may be underjetted so not to drown as per your calculations?)

heres a holley kit from re-carb:http://www.recarb.com.au/Nissan%20Pa...0RB30%20CK.php
PS i would go the efi personally

without doing the math, 330 is probably on the money for 6500 rpm.