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Holley or original twin carbs?
Posted: Sun Dec 26, 2004 9:08 pm
by Snarba
Hey y'all just bought myself a 78 rangie running LPG thru a holley....just wondering about pros and cons over original ie how steep a hill you can climb without running outa fuel in the carb etc. any advice muchly apreciated
Posted: Mon Dec 27, 2004 11:25 am
by BIg StEvE
I believe the original twin strombergs do an awesome job off road compared to the aftermarket holleys which dont like the angles!
Posted: Mon Dec 27, 2004 12:43 pm
by Rainbow Warrior
The twinscarbies are the go, work on any angle, take a bit of tuning to get right, a Holley unless set up by an expert on offroad Holleys, will give you grief. Though LPG will also work on any angle.
Posted: Mon Dec 27, 2004 2:58 pm
by p76rangie
What size holley is it. The standard twin carbs stangle the motor and will not allow it to rev out. If you are running on gas, the angles do not matter. I run a 500 holley on gas, the holley on petrol will run on everything except the steepest drop offs. You just make sure you are running gas on the really steep stuff and petrol will be OK on the rest,
Posted: Mon Dec 27, 2004 3:10 pm
by Aquarangie
There are trade-offs with both styles. Holleys perform better on-road, but crap off-road performance unless set-up properly. LPG is a saviour here for the flood/starve issue, may be wrong. Twin strommies are great off-road, smooth on-road but have lacklustre performace on-road.
I just had a 3.9 EFI 93 Rangie and have gone back to a sluggish twin carb fed 3.5 83 Rangie. A bit of a difference
But all aside, stick with the standard gear for off-road. less headaches if you ask me.
Trav
Posted: Tue Dec 28, 2004 9:55 am
by Snarba
Thanx for all the advice guys, most helpful. cheers
Posted: Tue Dec 28, 2004 3:45 pm
by Rainbow Warrior
p76rangie wrote:What size holley is it. The standard twin carbs stangle the motor and will not allow it to rev out. If you are running on gas, the angles do not matter. I run a 500 holley on gas, the holley on petrol will run on everything except the steepest drop offs. You just make sure you are running gas on the really steep stuff and petrol will be OK on the rest,
Can't say I had any revving out problems with my carbies, 6500rpm even with the 3.9 motor under them. I did have them re-jetted and had made flow improvements to the standard manifold, major grinding/filing before porting & rough polishing.