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Re: How many of us are there? Owners of Dodge based RV's?
westtexus wrote: I have an Edelbrock 750 carb. It has two vacuum ports on the front, one is very strong at idle, one is very weak at idle. Both provide timing advance when the engine is sped up, the timing stays at 8 degrees BTC at idle. Which port should I use? Their should be little to no vacuum to the advance port during idle unless you have the idle set to high which exposes the ported vacuum slot in the bore by the butterfly notice if you reduce the idle speed the ported vacuum will drop also. Here is another quote someone else asked it is very much like your question maybe this explaination is clearer: On the carb, one is timed vacuum, one is ported vacuum or manifold vacuum. You are not going to get "more" vacuum from the manifold than the ported vacuum, it defies physics. Now the timed vacuum port only gives vacuum after a valve opens, butterfly that is. The timed vacuum port is above the butterfly, so at idle, that port sees little if any vacuum because it is "open" to the atmosphere (above the vacuum source, the manifold) You may get a quicker response at the distributor from the manifold because the port is about 10 times the size as the one in the carb. Some Phords have the distributor vacuum line coming right off the intake.407Views0likes0CommentsRe: How many of us are there? Owners of Dodge based RV's?
westtexus wrote: Can anyone tell me if the vacuum advance on 440-3 distributer is to have constant vacuum, or not? It should be to a ported vacuum, this way the timing will change with the increase in vacuum. Use a timing light and watch the vacuum change as you rev-up the motor, a non-ported vacuun would be a constant advance in timing.Unported vacuum is an excellent tuning tool to see the over-all condition of the motor 17-20 at idle is ideal.407Views0likes0CommentsRe: How many of us are there? Owners of Dodge based RV's?
D&Sluv2fishandcampMN wrote: How many of you take your old beasts on trips of 150+ miles? I have always limeted mine to about 1 hour long trips. Just got back from a 720 mile trip 7 hours each way, averaged about 8MPG not to bad but a lot of work to get it to this level. Showers everyday and everything works even the fresh water level and battery level gauges. I did install a new fan system on the fridge it kept the trout frozen all the way home.407Views0likes0CommentsRe: How many of us are there? Owners of Dodge based RV's?
timmac wrote: Need help here, my 79 dodge 440 runs hot on hills, have replaced radiator with a 4 core super cooler, new stat, new hoses, new cap, and installed a new large transmission cooler and 50/50 antifreeze, motor runs cool in town with Vegas high temps and stop and go with no problem, runs cool on flat highways however it all goes to #@%$* when I drive up large grades in the summer, with all this work what is going wrong or is this normal for these old dodge motorhomes... I just got back last night from Bridgeport Calif. and it was 107* at times, I changed my radiator also but along with that put in a Milodon high volume water pump and thermostat, I also changed the fan just because I wanted to cover all the bases.The rig (a 1977 dodge establishment on a MB400 chassis, 440-3 motor)had no heating issues but I did experience what I would call a small case of vapor lock the unit would act like it was out of gas and at first I thought it was a fuel filter but it would come and go not like a filter problem. I replaced the thermoquad with the edelbrock replacement carb and boy it was not cheap and it did come with the phenolic spacer but I still think this issue was a vapor lock situation, although it never put us on the side of the road 100* degree weather all the way and no overheating problems, after the first trip this was a success story. I have to say the ride rite air bags were a big improvement in the handling of these types of motorhomes, I was a mess after the last trip and this time it was much better. If you have any questions on the mods I have done you can e-mail me ssvette@adelphia.net425Views0likes0CommentsRe: How many of us are there? Owners of Dodge based RV's?
Installed the Ride Rite air bags this weekend on my 1978 dodge establishment class C boy what a difference. The rearend lifted a couple of inches and the stability of the rig going down the freeway is 100% better. I just put 50psi in both so I have not played with it much, it did take a while to get the air lines from leaking but the installation was a breeze really engineered good. Next will be the fridge cooling coil kit which came today.296Views0likes0CommentsRe: How many of us are there? Owners of Dodge based RV's?
I found a new product that many of us with older RV's may be interested in. I have an issue with my refrigerator not getting cold on really hot days this man has developed a new product for this issue, it is affordable and a great idea. I will update the forum with my results and here is a link to check it out. http://www.snydersrvrefrigeration.com/index.html389Views0likes0CommentsRe: How many of us are there? Owners of Dodge based RV's?
I own a 24' 1978 establishment Dodge 440, sat for 12 years with the pervious owner before we decided to take her on for 200.00. Well I replaced the Carb with the Edelbrock which was a great move replaced the cooling system-Fan-Radiator-water pump. Then went after the interior new carpets and covers which we did ourselves, new tires last. She passed smog here in California no problem and we have done two trips at 1000 miles each. Problems we me to fix steering still to loose and now have a surge under heavy loads any suggestions?391Views0likes0Comments
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