340 overheating problems - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer 340 overheating problems

Print Thread

Page 2 of 3

1

2

3

Re: 340 overheating problems [Re: ahy] #846625 11/05/10 07:57 PM 11/05/10 07:57 PM
Joined: Jan 2008 Posts: 176 Ohio 4 440727 OP member
440727 OP member 4 Joined: Jan 2008 Posts: 176 Ohio	The car has no shroud .... Just bought a new MSD distributor so going start there with the adjustible weights and springs. How hard is it to install an MSD system ? Have 6AL box and distributor. Thanks !

Re: 340 overheating problems [Re: 440727] #846626 11/05/10 11:46 PM 11/05/10 11:46 PM
Joined: Apr 2010 Posts: 1,216 Under My Car Mopar_Country pro stock
Mopar_Country pro stock Joined: Apr 2010 Posts: 1,216 Under My Car	Quote: The car has no shroud .... Right there is where I'd start. The fan should be half in and half out of the back edge of the shroud. The shroud and fan combo is what keeps you cool at idle, at cruise there is enough air moving through the rad to run normal. As Chally 1 said advance your initial to get your idle down. You could be getting off the idle circuit and pulling some advance at that idle and that's what is making your timing jump around. As stated some movement is normal, mine bounces around about 2*. How did you determine the clutch fan is working properly?

Re: 340 overheating problems [Re: 440727] #846627 11/05/10 11:46 PM 11/05/10 11:46 PM
Joined: Jan 2003 Posts: 5,444 Indiana Y YO7_A66 master
YO7_A66 master Y Joined: Jan 2003 Posts: 5,444 Indiana	Raise the initial timing to 18 degrees and add a shroud. 1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)

Re: 340 overheating problems [Re: Mopar_Country] #846628 11/06/10 12:18 AM 11/06/10 12:18 AM
Joined: Jan 2003 Posts: 27,480 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,480 So Cal	Quote: Quote: The car has no shroud .... Right there is where I'd start. The fan should be half in and half out of the back edge of the shroud. The shroud and fan combo is what keeps you cool at idle, at cruise there is enough air moving through the rad to run normal.... I think you can get a factory shroud from the dealer still for an E-body.

Re: 340 overheating problems [Re: autoxcuda] #846629 11/06/10 08:02 AM 11/06/10 08:02 AM
Joined: Dec 2004 Posts: 5,278 San Jose, California D DennisH Vacation
DennisH Vacation D Joined: Dec 2004 Posts: 5,278 San Jose, California	Got a B Body shroud from Megaparts. $95. Took about 10 days to get here though with standard shipping.

Re: 340 overheating problems [Re: autoxcuda] #846630 11/06/10 08:34 AM 11/06/10 08:34 AM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: Quote: Quote: The car has no shroud .... Right there is where I'd start. The fan should be half in and half out of the back edge of the shroud. The shroud and fan combo is what keeps you cool at idle, at cruise there is enough air moving through the rad to run normal.... I think you can get a factory shroud from the dealer still for an E-body. Definitly needs a shroud also. Can't have too many shrouds. I bought a couple last time I was at the dealer about 5 years ago. Keeping one new one for a spare. They had plenty back then. Hope this helps your buddy. Putting in a new dist isn't gonna help until you get the timing straightened out. Also you don't need a MSD, factorty ignition does just fine for me. I drive my cars alot.

Re: 340 overheating problems [Re: Challenger 1] #846631 11/06/10 09:05 AM 11/06/10 09:05 AM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Bragging, ever drive your car this fast for this long in 95 degree heat at 6000+ feet alitude? Like what was said above, factory cooling is best with the old original copper radators.IMO This is as hot as it got and even cooled back down at idle as I let it sit for at least 5 mins idling back at the trailer siting in 95 degree heat with the AC running the whole time. Ulitimate test of the cooling and fuel delivery system this day. Car passed with stock cooling and fuel system including a factory vapor separator mounted at the fuel pump. It's a 10.5 to 1 340 with a 600 eddie carb. It's idling in this picture after I ran it at those speeds, Bonneville salt flats where there is no speed limit!! First my wife and I drove 14 miles straight down the long course at about 40 mph and turned around to came back at 40 and it was freaky. All we brought was her phone. I forgot the GPS or even water. We drove back toward the trailer following the fresh tire tracks, it was like being on the moon. I dropped her off I grabbed my GPS, camera, phone and some water went out there by myself and had at it. Next year I will have on lot's more safety equipment including a helment and racing shoes. Had my seat belt on. lol

Re: 340 overheating problems [Re: Challenger 1] #846632 11/06/10 09:15 AM 11/06/10 09:15 AM
Joined: Dec 2004 Posts: 5,278 San Jose, California D DennisH Vacation
DennisH Vacation D Joined: Dec 2004 Posts: 5,278 San Jose, California	Cool pics. Agreed. Ma knew. -Copper. -Thermal fan. -Green coolant. It all worked and still works. Wish I had bought some of those Mopar made in USA shrouds when available.

Re: 340 overheating problems [Re: Challenger 1] #846633 11/06/10 10:33 AM 11/06/10 10:33 AM
Joined: Jan 2003 Posts: 5,444 Indiana Y YO7_A66 master
YO7_A66 master Y Joined: Jan 2003 Posts: 5,444 Indiana	""including a helment and racing shoes."" I like your high speed flip flops that you had on in the pictures. 1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)

Re: 340 overheating problems [Re: YO7_A66] #846634 11/06/10 10:57 AM 11/06/10 10:57 AM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: ""including a helment and racing shoes."" I like your high speed flip flops that you had on in the pictures. Yea I know, it was pretty stupid. She in no way was gonna let do it while she was in the car and I kept saying I wasn't gonna do it. But when I got out there by myself it just kinda happened?

Re: 340 overheating problems [Re: Challenger 1] #846635 11/06/10 03:50 PM 11/06/10 03:50 PM
Joined: Jan 2008 Posts: 176 Ohio 4 440727 OP member
440727 OP member 4 Joined: Jan 2008 Posts: 176 Ohio	Ok guys... He has an aftermarket Jegs aluminum radiator and Jegs only makes a flat shroud which requires some modification. So we'll address this by going to stock radiator or getting a shroud made up. Accel does not sell a spring and weights set up for their distributors. Now I've already tried adjusting the total advance setting on this currect distributor. I pulled it apart and loosen both screws and moved the total advance plate 1/16 of an inch up. Put it all back together and the ran the car. Well I had an initial timing of 15* and total advance of 34*. Well the car could be idled down to 800rpms but the car was wanting to fall on its face on the road. So I put it back to original setting which is where we are now. So my brother went out and bought the MSD set up because they have the springs and weights. Now what's your opinion guys ? Thanks !

Re: 340 overheating problems [Re: 440727] #846636 11/06/10 04:20 PM 11/06/10 04:20 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: Now what's your opinion guys ? Thanks ! I think the MSD dist has a reputation for rusting really bad inside, keep a eye on it. Like I said, it's lean, jet it up so it won't "fall on it's face" Timing needs to be where we"re all telling you. I'm not familer with a Accel dist, can't be much different than stock. You have to shorten the slots in the advance plate to limit advance. Does that sound right to you? (me not knowing about accel dist) Springs don't adjust advance in dist, don't worry about springs at this time. Worry about timing not springs. The length of the slots adjust the total timing. Nothing wrong with a aluiminum radiator, it just needs a shroud to go with that clutch fan which is the hot setup. imo lol

Re: 340 overheating problems [Re: Challenger 1] #846637 11/06/10 06:35 PM 11/06/10 06:35 PM
Joined: Jan 2008 Posts: 176 Ohio 4 440727 OP member
440727 OP member 4 Joined: Jan 2008 Posts: 176 Ohio	Well the problem is as the Accel distributor sits now if I but it at 18* initial timing I'll be running like 50* total advance. So was I going in the right direction on adjusting the advance plate ? Just go more this time ? The engine builder said don't go over 36* total timing on 93 octane or we'll tear stuff up. Thanks guys !

Re: 340 overheating problems [Re: 440727] #846638 11/06/10 06:44 PM 11/06/10 06:44 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: Well the problem is as the Accel distributor sits now if I but it at 18* initial timing I'll be running like 50* total advance. So was I going in the right direction on adjusting the advance plate ? Just go more this time ? The engine builder said don't go over 36* total timing on 93 octane or we'll tear stuff up. Thanks guys ! Yes your builder is right on. Inside the dist there are slots that need to be closed up/shortened so they only provide a additional 17 degrees of timing. 18 degrees at idle and +17 when you rev it up and that gives you 35 degrees of total timing, not counting vacum advance. Hope this is starting to make sense. Last edited by Challenger 1; 11/06/10 06:47 PM.

Re: 340 overheating problems [Re: Challenger 1] #846639 11/06/10 06:56 PM 11/06/10 06:56 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	is that 18 initial @800 rpm? then as said above shorten the slots to get 35 total. (possibly) need to richen the carb but I'd start on the airflow prob. live every 24 hour block of time like it's your last day on earth

Re: 340 overheating problems [Re: RapidRobert] #846640 11/06/10 07:36 PM 11/06/10 07:36 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: is that 18 initial @800 rpm? Yes

Re: 340 overheating problems [Re: Challenger 1] #846641 11/06/10 11:21 PM 11/06/10 11:21 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: Quote: is that 18 initial @800 rpm? Yes Alright, shorten it to 35 total & that'll get the timing out of the way. However do note (& post) what rpm it reaches 35 at & the springs might be off but if it is not pinging then no damage is being done there & it is close enough to ideal to not be retarded & having anything to do w the overheating. Continuing on... live every 24 hour block of time like it's your last day on earth

Re: 340 overheating problems [Re: Challenger 1] #846642 11/07/10 01:44 AM 11/07/10 01:44 AM
Joined: Jan 2008 Posts: 176 Ohio 4 440727 OP member
440727 OP member 4 Joined: Jan 2008 Posts: 176 Ohio	Are you talking about the slots which the advance moves back and forth on ? These are two slots that are like 3/4 of an inch long paralle to each other held down by torx screws. Thanks guys ?

Re: 340 overheating problems [Re: 440727] #846643 11/07/10 04:34 AM 11/07/10 04:34 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Havent been in a Mallory built unit but yes shorten the slots/limit the travel live every 24 hour block of time like it's your last day on earth

Re: 340 overheating problems [Re: 440727] #846644 11/07/10 08:44 AM 11/07/10 08:44 AM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: Are you talking about the slots which the advance moves back and forth on ? These are two slots that are like 3/4 of an inch long paralle to each other held down by torx screws. Thanks guys ? Yes, that's it! You already have the good adjustable mallory designed dist. It's a nice peice! It's better than The MSD for sure in my mind. You loosen both torx screws and close down those slots which limit over all timing.(there more like square windows on the adj units) Way better and easier to adjust than a stock dist. Can you post any pictures of it?? Last edited by Challenger 1; 11/07/10 03:05 PM.

Page 2 of 3

1

2

3

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1