View Full Version : Big Bore Throttle Bodies
27-10-2002, 08:22 AM
On Saturday I had a Suburban exchange bored T/B fitted to the Jeep.It was an instant improvement for low to mid range acceleration.I find I'm not using as much throttle to get it up to speed or keeping it there and working on that theory it should be using less fuel,these are currently under test on 5 different Jeeps all used under different conditions.
In offroad suituations,spent the w/e down at Menai trail testing it,has worked great I thought it might make it a bit touchy in low range(especially with the Terra Low) but it in fact made it easier to control.Either that or I just had one of those days where it all goes to plan.. :D
Any way I'll keep you all informed of my observations as I'll be putting it through everything from daily driving to comps over the next month.. so far it's got the big :D from me..
[ 27 October 2002, 07:24 PM: Message edited by: SUB TJ ]
27-10-2002, 08:46 AM
how long is the testing going on for?How are the others going with the t/b's
27-10-2002, 11:04 AM
I have thought of doing this mod but the BIG question is - will it be OK running LPG???
Will the testing have a dual fuel capability??
Just asking.... ;)
27-10-2002, 11:05 AM
What sort of price will they be running at?
28-10-2002, 05:33 AM
It is very easy to bore your own with basic tools. I did a write up on it and a lot of people in the US have done it as well from those insturctions and none have had any problems and love the improvement.
As for running on gas, I can not see how it could be a problem and I have my gas ticket to do conversions. Even did Tony's from USA4X4 a few years ago ( CJ7 Levi's edition ) as an electrician he was not confident he could do it himself. :rolleyes:
Go to my site and the how to section for the information.
28-10-2002, 07:12 AM
The T/B's will be available in the next few weeks on an exchange basis,making this a very easy bolt on Job.It makes it perfect for those,like myself,who can use a spanner and screw driver but little else... :eek: :D
You'll have to give Suburban 4Wd a call regarding the pricing as I have NFI.
OzJeeper I don't think we have any gas powered Jeeps up here to test on graemlins/dunno.gif ...But as Gojeep has said I really can't see any reason for it not to work.
28-10-2002, 10:07 AM
One day soon when I can afford to have the Jip "off the road" graemlins/headspin.gif
04-11-2002, 08:39 AM
First fuel up since fitting the T/B and I managed to get 473 K out of 77L using premium. A mix of country and city driving with no off road. The best I could manage before was around the 430-440 mark. :D
[ 04 November 2002, 08:19 PM: Message edited by: SUB TJ ]
04-11-2002, 10:12 AM
A 30 Km saving per tank, hmm that works out to be lets see
(77/470)*30 gives about 5 litre saving per tank.
hmm thats about $4.50
So depending on how much the TB is you could recoupe the costs fairly quickly, lets see if it is around $200 bucks thats only 44 fill ups. or around one years driving for me.
Does anyone know how much they are?
As you can tell i am studing for my maths exam!
04-11-2002, 08:36 PM
LOL I just realised I only filled my fuel tank 7 times last year and probably only 10 times this year tongue.gif
04-11-2002, 11:06 PM
i fill 3 times every 2 weeks
i gota stop driving...
05-11-2002, 06:03 AM
Originally posted by SUB TJ:
First fuel up since fitting the T/B and I managed to get 473 K out of 77L using premium. A mix of country and city driving with no off road. The best I could manage before was around the 430-440 mark. :D <font size="2" face="Verdana, Helvetica, sans-serif">Thats 16.3l/100 after and 17.7 before for those who want to compare!
29-11-2002, 04:22 AM
Just a note on the pricing of the XL throttle bodies (up 6mm from standard to 60mm). Price for an exchange unit is around $220 (ie oil and filter change cost from a stealership). Price rises to $250 fitted.
29-11-2002, 04:38 AM
That's not 2 bad a price. But I wonder if they'd still sell it to me and trust that I'd post my old one back? Can't be without the Jeep for any period of time really. Need both our vechicles running at the same time.
29-11-2002, 05:48 AM
Originally posted by Red Rat:
Just a note on the pricing of the XL throttle bodies (up 6mm from standard to 60mm). Price for an exchange unit is around $220 (ie oil and filter change cost from a stealership). Price rises to $250 fitted.<font size="2" face="Verdana, Helvetica, sans-serif">It is still the standard bore of 60 mm except for the removal of the lip at the bottom. Please dont think that you suddenly have your whole throttle body 6 mm bigger which is the impression you get from the above comment as your butterfly or throttle plate is still the same size as standard and are not changed. :(
Just look at my how to section of my site which shows exactly what is being done and also how easy it is to do your own. smile.gif
It most likely where they got the information from in the first place. :rolleyes:
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