Search found 18 matches

by darrin1999
Thu Nov 15, 2007 3:27 pm
Forum: Propane Forum
Topic: Impco 5psi turbo rating - push them any more ?
Replies: 5
Views: 1706

better watch the temp of the mixture and get a good intercooler... you dont want your a/f mix to ignite in the intake manifold- which it could easily do under enough boost.
by darrin1999
Fri Jun 22, 2007 3:30 pm
Forum: Propane Forum
Topic: High power propane
Replies: 12
Views: 5799

technocarb mixers are usually designed for closed loop operation- id switch to 2 impco 425's with model e's and a low rise dual quad intake ;)
youll have a simpler, cheaper, more common, and easier to find parts for propane setup. just make sure you get the #44 lean air valves :)
by darrin1999
Fri Jun 22, 2007 2:31 pm
Forum: Propane Forum
Topic: 440 / 512 build ....dynamic compression limit?
Replies: 9
Views: 3028

if youre after 170-180 psi- and atmospheric pressure is 14.7 psi, that means youre after 11.3-12 to one dynamic compression- but i think thats based on research octane- not motor octane. if you go on the motor octane of 97- which is erring on the side of caution (usually a good thing for a towing mo...
by darrin1999
Fri Jun 08, 2007 8:37 pm
Forum: Propane Forum
Topic: Carburetion Best Practices
Replies: 14
Views: 6317

ive said many times to people that just because a part is new doesnt mean its good... but i didnt know q.c. was that big of a problem on the cheap chinese crap
by darrin1999
Fri Jun 08, 2007 11:03 am
Forum: Propane Forum
Topic: insurance
Replies: 2
Views: 1509

yep, i asked my insurance guy the same thing, and he said they just go by the vin, so whatever modifications you do dont matter, its still the same liability insurance... never had a vehicle worthy of full coverage so didnt ask about that
by darrin1999
Fri Feb 23, 2007 3:41 am
Forum: Propane Forum
Topic: Propane and exhaust system
Replies: 7
Views: 2769

i dont know, most of my experience is with ford products, but when you put a bigger intake on one it lowers the low end power, but gives it back at higher rpms... thats why intakes have an rpm rating on them... look for the rpm range on the intake that fits your cam and how you drive.
by darrin1999
Wed Feb 21, 2007 8:56 pm
Forum: Propane Forum
Topic: Propane and exhaust system
Replies: 7
Views: 2769

i would go with the long tube headers... theyll give better low end. id also raise the compression a little... at least 10.5, 11 would be better... just keep your dynamic compression between 9 and 9.5-1 and youll be good on dedicated propane. a pretty good dynamic compression calculator is www.edyno...
by darrin1999
Wed Dec 13, 2006 12:37 am
Forum: Propane Forum
Topic: propane 351w
Replies: 20
Views: 7804

i was planning on an open loop system for simplicity, so thats cool. mileage wont be much of an issue because the 545 isn't something id drive every day, plus just from the displacement it would inherently get terrible mileage, not to mention its also going in a 5500 lb 1978 f250 4x4 truck-I'm figur...
by darrin1999
Tue Dec 12, 2006 9:08 pm
Forum: Propane Forum
Topic: propane 351w
Replies: 20
Views: 7804

sweet :) i wouldnt have to have dual quad :) i probably still will though, its cheaper and parts are much more available for impco and ohg. im just not sure how itll tune. do you think dual impco 425s or dual ohg 450s would be better/easier to tune for a relatively mild street 545 ci? or do you thin...
by darrin1999
Tue Dec 12, 2006 7:47 am
Forum: Propane Forum
Topic: cylinder heads for propane use..
Replies: 4
Views: 2073

if i were building a chevy 350 to run on propane id probably use part #TFS-30300001 from summitracing.com, theyre 56cc chambers so youll get better compression for propane, theyre aluminum for better heat dissipation, and theyre 1000 dollars assembled for the pair... imo you couldnt go wrong... the ...
by darrin1999
Tue Dec 12, 2006 7:22 am
Forum: Propane Forum
Topic: propane 351w
Replies: 20
Views: 7804

i got that rating off www.propaneguy.com, but havent been able to find out much about it- its like everything else for propane power- hit or miss... a little info here a little there... and the info is different from different places but the basics are still the same- oil stays clean so oil lubed pa...
by darrin1999
Wed Dec 06, 2006 9:06 pm
Forum: Propane Forum
Topic: propane 351w
Replies: 20
Views: 7804

depending on your rpms the ohg 450 may work, but youd probably be better off with the technocarb 700 cfm mixer or a dual quad setup with dual 425 impcos... im building basically the same thing only im stroking my 460 to 545 so at 5000 rpm i need about 800 cfm... so im going for the dual 425 setup :-...
by darrin1999
Mon Dec 04, 2006 8:26 pm
Forum: Propane Forum
Topic: excessive LPG consumption
Replies: 8
Views: 2931

yep id say its the stall too... youd be better off with a little more compression and a 2200 rpm stall, and try some smaller headers... a 5.0 l shouldnt need more than 1 5/8" primaries... anything more and youll lose low end torque. the stall converter is the reason your car feels "doughy" below 250...
by darrin1999
Sun Dec 03, 2006 8:34 am
Forum: Hydrogen Forum
Topic: H2O ?
Replies: 4
Views: 7896

i read about those air powered cars... when i first heard about them the first thing that came to mind- hmm... must be impact wrench technology... and essentially it is, just a little more efficient design
by darrin1999
Sun Dec 03, 2006 7:43 am
Forum: Your Self
Topic: hi
Replies: 0
Views: 3662

hi

hi, my name is darrin, im from fargo north dakota, im 27, i make pvc pipe for a living but fix vehicles on the side, my 3 projects in the project forum take up most of my spare time and money, but once i get them done i should never have to buy another vehicle as long as i live, i only drive about 1...