Search found 993 matches

by C3H8
Fri May 18, 2018 12:36 pm
Forum: Propane Forum
Topic: basics on tank gauge sender ?
Replies: 5
Views: 104

Re: basics on tank gauge sender ?

The old gauges and senders were fairly easy to check out. All GM's of this vintage OEM gauges were 0 to 90 ohms resistance. Check the dash gauge assuming it is using the OEM gauge. First by remove the signal wire from the sender at the tank. The dash gauge should read overfull. Then ground the wire....
by C3H8
Tue Mar 06, 2018 5:43 am
Forum: Propane Forum
Topic: Ford 4.9/300 Propane Problems
Replies: 20
Views: 929

Re: Ford 4.9/300 Propane Problems

A little add on to my previous recommendation. It sounds like the system is older and should have everything checked out. I do believe though that the problem will be found post regulator. Depressing the primer button should not affect the fuel mixtures off idle. The fact it does means the secondary...
by C3H8
Mon Mar 05, 2018 2:23 pm
Forum: Propane Forum
Topic: Ford 4.9/300 Propane Problems
Replies: 20
Views: 929

Re: Ford 4.9/300 Propane Problems

No. From here you need to return to basics and a uniform investigation. - Starting from the tank you need to check out each component. Initially it sounds like you have a fuel restriction somewhere ahead of the converter/regulator. Check your tank valve and make sure it is functioning properly and t...
by C3H8
Mon Feb 26, 2018 12:36 am
Forum: Propane Forum
Topic: Ford 4.9/300 Propane Problems
Replies: 20
Views: 929

Re: Ford 4.9/300 Propane Problems

On a 125 mixer the power valve is an integral part of the mixer. It is located at the vapour inlet on the bottom side. Its the silver adjuster with a small pointer on it and has 2 wrench flats. Probably 1/2 inch(13MM) wrench size. The mixer will have an R and L stamped in it indicating Rich and lean...
by C3H8
Mon Feb 26, 2018 12:35 am
Forum: Propane Forum
Topic: Ford 4.9/300 Propane Problems
Replies: 20
Views: 929

Re: Ford 4.9/300 Propane Problems

On a 125 mixer the power valve is an integral part of the mixer. It is located at the vapour inlet on the bottom side. Its the silver adjuster with a small pointer on it and has 2 wrench flats. Probably 1/2 inch(13MM) wrench size. The mixer will have an R and L stamped in it indicating Rich and lean...
by C3H8
Sun Feb 25, 2018 1:17 am
Forum: Propane Forum
Topic: Ford 4.9/300 Propane Problems
Replies: 20
Views: 929

Re: Ford 4.9/300 Propane Problems

All valid comments ahead of this post. The 300 would stretch the capability of a J though. The problem is the fuel is taxing the capability of the reg to vapourize enough fuel. Your comment about pushing the primer help indicate that there is a problem with the J. A primer button is meant to depress...
by C3H8
Fri Feb 16, 2018 1:49 pm
Forum: Propane Forum
Topic: Catalytic convertor on a 2015 gas 2500hd
Replies: 3
Views: 247

Re: Catalytic convertor on a 2015 gas 2500hd

The post cat 02 sensor measures cat efficiency. The ECU compares the pre-cat O2 with the post-cat reading expecting to see a variation in the readings. If it see a wide variation is signals a problem. Misfires are a cats worst enemy. Your loss of mileage is probably due to the cat becoming plugged. ...
by C3H8
Thu Feb 08, 2018 2:59 pm
Forum: Propane Forum
Topic: Exhaust valve rotators
Replies: 2
Views: 210

Re: Exhaust valve rotators

Keep them. Back in the pre-unleaded days it was controversial. Ford said disable them and did so on all the 429 F700 and F800 trucks. I believe they continued to do this even after unleaded came to market. Chrysler and GM said keep them. After unleaded our company went right to the source and asked ...
by C3H8
Wed Dec 27, 2017 4:27 pm
Forum: Propane Forum
Topic: Impco 600
Replies: 8
Views: 470

Re: Impco 600

Darn!! Just wrote a reply to this and hit the wrong button and deleted it. Here goes again. Back in the 80's we had a dealer that ran a GM BB in a race car. Special engine. Huge heads and something like 750CI. He ran two 600's on it. It took a lot of experimentation to get it right. It could run an ...
by C3H8
Thu Dec 14, 2017 2:09 am
Forum: Propane Forum
Topic: Goodness me !!
Replies: 4
Views: 337

Re: Goodness me !!

Its called iron oxide. It may not have come from your tank but it is hard to get rid of it. Your filter is doing a pretty good job of trapping it but there is also probably a pretty fair amount getting through. The good news is it burns off easily without impacting the engine. We had a pretty sever ...
by C3H8
Wed Nov 15, 2017 11:34 pm
Forum: Propane Forum
Topic: mounting a IMPCO relocation arm
Replies: 4
Views: 295

Re: mounting a IMPCO relocation arm

They were called unadapt. IMPCO and Gann used to make special adaptors that were quite clunky and heavy allowing the offsetting of 300 mixers. They came up with this system where the material was lighter and allowed various combinations to offset the 100, 200, 300, and 425 mixers. All of them requir...
by C3H8
Wed Nov 15, 2017 11:20 pm
Forum: Propane Forum
Topic: Twin mixers off one converter?
Replies: 9
Views: 462

Re: Twin mixers off one converter?

Hi guys. I'm still around. Just noticed that the new posts tend to stall for a while sometimes now. I don't check in every single day unless I see something happening, like now. All of a sudden several new posts added the last few days. Dual mixers can be run off of a single convertor. You have to k...
by C3H8
Tue Oct 24, 2017 11:57 pm
Forum: Propane Forum
Topic: anyone know these adapters part #'s please?
Replies: 8
Views: 447

Re: anyone know these adapters part #'s please?

The old books prior to computers had pretty good descriptions. AA3-67 is listed for Mitsubishi lift truck throttle body. AS3-10 is listed as an adaptor to turn the mixer 90 degrees for Allis Chalmers engines. Obviously it can work on any application with the 100 or 125 mixers. You guys did a good jo...
by C3H8
Wed Jul 26, 2017 12:13 am
Forum: Propane Forum
Topic: 377 small block chevy, dual 425s, many issues?
Replies: 12
Views: 822

Re: 377 small block chevy, dual 425s, many issues?

Sounds like a nice engine package. The thing to remember is that the timing specs you will typically find on our site refer to factory produced engines. The SBC in the early 80's only had about 8.5:1 compression. The late 80's and 90's upped the number to a high of 9.5:1. These engines required a mo...
by C3H8
Sun Jul 16, 2017 2:15 pm
Forum: Propane Forum
Topic: x450 mounting
Replies: 28
Views: 2844

Re: x450 mounting

That really comes down to so many factors. Obviously the spread bore can handle a lot more CFM but the question has to be do you need that much? Two square bores can handle 1000 to 1500 CFM, maybe more. Feel free to correct me if I'm wrong on that. Also the spread bore requires an additional adaptor...