Search found 77 matches
- Fri Jun 08, 2018 1:37 pm
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
:think: As you seem to have just proven, the car needs more timing advance. But not just static initial advance, it needs timing advance at slow engine speeds (provided by vacuum advance) and then it transitions to more advance at high engine speeds (as the vacuum advance disengages due to low leve...
- Fri Jun 08, 2018 1:04 pm
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
Could it more than likely be just a bad valve spring some where?
Maybe I should go to a 1/2 or 3/4 turns from zero lash (just to see what happens)? Is this a pointless or stupid idea?
1961 Greenbrier, 1962 Rampside and 1964 Monza cab.
Maybe I should go to a 1/2 or 3/4 turns from zero lash (just to see what happens)? Is this a pointless or stupid idea?
1961 Greenbrier, 1962 Rampside and 1964 Monza cab.
- Fri Jun 08, 2018 12:59 pm
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
Hmmm 102 should not have a balancer on it. What about improperly clocked distributor? What do you mean by this? I’m not an expert on all terms... but surely if i can adjust the distributor so it gives me an advance of 13 or 16 and the engine idles at around 550 or 600 then everything is ok with the...
- Fri Jun 08, 2018 12:52 pm
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
It’s going OK at 13 and OK at above 1864powerglide wrote:!02 HP will lose high speed power if the timing is set over 18 advanced.
So this is weird
1961 Greenbrier, 1962 Rampside and 1964 Monza cab.
- Fri Jun 08, 2018 12:49 pm
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
Is your dwell tach needle bouncing at idle or is it steady?? If it's moving does it go up then down or drop then go back up? I have a digital Actron dwell meter... fluctuates a little at idle from 31.5 to 31.8 At 1500 rpm it goes down slightly to 32.1/32.2 1961 Greenbrier, 1962 Rampside and 1964 Mo...
- Fri Jun 08, 2018 12:38 pm
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
As the advance in timing did help, an immediate thought comes to the Harmonic Balancer. Many of the older balancers have a rubber ring that deteriorates. This allows the timing mark to actually move. If this were to be the case, could cause "jolting" or other vibrations. I have no harmoni...
- Fri Jun 08, 2018 11:11 am
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
It sounds like you've certainly thought this through and touched all the bases. It sounds like you are describing an unusual surging and uneven engine operation that only occurs at low engine speeds with minimal loading. Everything seems to smooth out and run better at higher speeds with more load ...
- Fri Jun 08, 2018 10:56 am
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
An idea. Try advancing the spark more. Additional timing advance may give better performance. Let us know what happens Tried this and the 102hp went like a ‘rocket’... probably advanced to at least 30/36 with some testing... is this possible to advance this much and still go well? However the jolti...
- Fri Jun 08, 2018 7:36 am
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
Don’t think so... but will double check64powerglide wrote:Float level set to high in the carbs??????
I’ve tried two different sets if Wolf rebuilt/renovated carbs
1961 Greenbrier, 1962 Rampside and 1964 Monza cab.
- Fri Jun 08, 2018 7:34 am
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
So try 18 or 20?Jerry Whitt wrote:An idea. Try advancing the spark more. Additional timing advance may give better performance. Let us know what happens
1961 Greenbrier, 1962 Rampside and 1964 Monza cab.
- Fri Jun 08, 2018 5:12 am
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Re: Stuttering/surging
P.S. have new universal joints installed
1961 Greenbrier, 1962 Rampside and 1964 Monza cab.
1961 Greenbrier, 1962 Rampside and 1964 Monza cab.
- Fri Jun 08, 2018 4:57 am
- Forum: Ask your Mechanical Questions here
- Topic: Stuttering/surging
- Replies: 41
- Views: 5484
Stuttering/surging
OK, i’ve put the 102hp engine into my Greenbrier and have had a few problems. Had a weird vacuum leak that is now solved :) The only problem I have now is a stuttering/juddering/surging when I just cruise at low speed. I’ve near enough checked and changed everything and I’m pretty sure everything is...
- Thu May 10, 2018 2:34 pm
- Forum: Ask your Mechanical Questions here
- Topic: Petronix Flame-Thrower
- Replies: 11
- Views: 2112
Re: Petronix Flame-Thrower
In my 1961 80hp Ive been using a 1.5 ohm with points for about 2 years and just this winter installed a Mallory Hyfire which is triggered by the points with the same 1.5ohm flamethrower and it's been great. No issues at all, knock wood. Sent from my LG-H931 using Tapatalk Thanks for the info Lostbo...
- Sun May 06, 2018 4:19 pm
- Forum: Ask your Mechanical Questions here
- Topic: Petronix Flame-Thrower
- Replies: 11
- Views: 2112
Re: Petronix Flame-Thrower
:think: :idea: If I haven't confused you already, here are a couple of other suggestions and ideas... It is not a bad idea to relocate the coil mount position at the same time. The standard installation of the ignition coil was always mounting it directly on the right cylinder head. The cylinder he...
- Sun May 06, 2018 2:29 pm
- Forum: Ask your Mechanical Questions here
- Topic: Petronix Flame-Thrower
- Replies: 11
- Views: 2112
Re: Petronix Flame-Thrower
I'm not surprised about the Petronix confusion on the internet. I'm still amazed by the amount of incorrect Petronix information out there. While Petronix instructions and catalog have improved, specific make information is still vague. You may have this information - Ballast (wire) on Corvairs is ...
- Sun May 06, 2018 11:07 am
- Forum: Ask your Mechanical Questions here
- Topic: Petronix Flame-Thrower
- Replies: 11
- Views: 2112
Petronix Flame-Thrower
IMG_2788.JPG I have 2 Flame-Thrower coils. One is 1.5 ohm and the other is 3.0 ohm. Can these be used (if a ballast resistor is used) on a Corvair? Getting yes/no when I check out on the Internet. Petronix says yes... but says the 1.5 is for a V8? IMG_2787.JPG Any info/help appreciate 1961 Greenbri...