R33Gtr Idling

[maka]

Hi All,

I have a bit of an issue with my GTR. When it was just running, it would idle at ~ 1500rpm. So a quick search on the net pretty much summed my problem up.. I had cleaned the throttle bodies while the engine was in bits, and seems like i created the problem for myslef. So the painful process of removing the inlet manifold and throttle bodies to investigate started. The manifold is off, and I inspected the throttle bodies, to find that they were not closing all the way due to some of the (nissan coating) still being there. So now i cleaned them all the way, and they look quite sparkly inside.. I had a look at all the parts, and found that one of the O'rings needed replacing as well, but no matter where I go, I cant find a place to buy them.. I bought new gaskets for the throttle bodies, but dont want to be in a position where i would need to pull them off again.

Anyone know where I can get some of these? and is there anyone that can suggest something similar to the coating that nissan use, rather then using silicone as suggested on a DIY fix. I heard that some of the performance shops dont bother with this, but i would rather be sure..

Am I on the right track or completely wrong..

Some images are here.

Any help is appreciated.

Thanks.

Mark.

[N1GTR]

Tried Nissan?

[maka]

Yeah mate,

That was my first option.

Then went to United Fuel injection, to see if they can help.. but no such luck.. getting my injectors serviced tho.

[DVS JEZ]

If u can see light around the butterfly valve then u have now killed ur throttle bodies. Get some 2nd

Hand ones.

I did exactly what u did on my 1st build. Ur car will now idle at 2500rpm.

[maka]

Yeah thought about that..

But luckily, I can't see light looking through them.. So I think they are still fine.. I would not wanna risk it tho, so therefore would just get the orings replace them, and she should be ok.. Worst case I will use just a very fine coat of silicone, but did not wanna go down that route.

Thinking about taking them to a performance shop to see what they think.

[r32-25t]

Have you tried a bearing shop?

[maka]

No that is something that I did not even think of.

Now that you mentioned it, I will go see a few, and see if they have anything similar.

Thanks heaps for that..

[Pal]

got some measurements of the o ring, we got kits at work. may have them

[femno]

If u can see light around the butterfly valve then u have now killed ur throttle bodies. Get some 2nd

Hand ones.

I did exactly what u did on my 1st build. Ur car will now idle at 2500rpm.

lolwut??

Firstly, whats wrong with the 'oring'? Are you talking about the orange dust cover? Looks fine to me.

Apart from the fact the old throttle plate sealer was stopping the butterflys from closing, the other problem you have is that you cleaned it all out!!

You can get the butterfly sealant. This needs to be in there if you want your idle back.

http://justjap.com/store/product.php?productid=19326&cat=&page=2

[portaz]

Just search throttle body reseal and reseal them with blue rtv sealant thinned down a bit the instructions are comprehensive and it works! I could idle mine at 700rpm if I wanted to, no need to replace them.

[DVS JEZ]

I wish i knew of that stuff 6yrs ago. I got 2nd hand ones for $150 so guess i was lucky in a way

[maka]

Thanks for all your help guys.

I will post some pics on what i have decided to do. But I will apply a coating, there is still some light poking through..

The end bits are just dust covers by the look of it, and I was told as long as i coat around the butterfly shaft, I wont need to replace them.

Basically stripped the throttle bodies, and polishing them while I am at it..

Thanks heaps again.

[portaz]

Mate don't polish them just clean, then wax and grease remover then reseal the less u can touch them the better it took me a few goes till I was happy,

Scott

[Don Dada]

good info here too

http://www.skylinesaustralia.com/forums/topic/133599-rb26-throttle-body-seals/page__hl__throttle+body+seal__st__20

Edited May 26, 2011 by Don Dada

[snozzle]

I can reset the stops on your throttles and re-seal them with tomei throttle coat for you, that should do the trick

im located in bayswater, near morley

send me a PM if interested