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FE TALK
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http://www.clubcobra.com/forums/fe-talk/)
| BAsque1 |
04-22-2014 03:01 PM |
Turkey Pan on Side Oiler
Hello Folks:
My 427 S/O is equipped with a turkey pan. This engine is running very rich despite the fact that the timing is by the book. A friend suggested that the turkey pan might create a flow of gas between the 2ndary and primary venturis of the carb creating a rich running engine. Any thoughts on this? I don't think this is correct but hey you never know...Please forgive my lack of FULL knowledge on this topic. I have a 1/2 phenolic spacer and a 770 cfm Holley Carb.
Tks for the input
Basque1 (Lou)
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| marcocsx3121 |
04-22-2014 03:18 PM |
Timing does not affect fuel/air ratios. Have you checked your carb jetting? There have been reams of "how-tos" written on the process. Pretty basic stuff.
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Check bowl float levels too.
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| patrickt |
04-22-2014 03:52 PM |
Quote:
Originally Posted by BAsque1
(Post 1296965)
A friend suggested that the turkey pan might create a flow of gas between the 2ndary and primary venturis of the carb creating a rich running engine. Any thoughts on this? I don't think this is correct but hey you never know...
|
No. Not a chance. Zero possibility. But your friend gets points for creative thinking.:cool: |
| BAsque1 |
04-23-2014 05:07 AM |
Tks Guys:
I have checked the gas bowls and the adjustment is correct, my idea was the jets for I had this problem with my Volvo 123 GT when I recarb it to Webers 45s I had to jet them accordingly. My only concern in changing the jets is leaning the car too much and increasing the operating temp of the engine.
Patrick I thought so too but his point was that he felt that the gasket was not efficient enough and this could happen. I did not think so but crazier things do happen. Like a last year's fiasco with the carb gasket that broke a small 1/4 " piece and it got stuck on in the 2ndary butterflies and the car went hey wire accelerating almost out of control.
I will contact Holley for the sets of jets.
Lou
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| patrickt |
04-23-2014 05:25 AM |
Quote:
Originally Posted by BAsque1
(Post 1297073)
Patrick I thought so too but his point was that he felt that the gasket was not efficient enough and this could happen. I did not think so but crazier things do happen. Like a last year's fiasco with the carb gasket that broke a small 1/4 " piece and it got stuck on in the 2ndary butterflies and the car went hey wire accelerating almost out of control.
I will contact Holley for the sets of jets.
Lou
|
Alright, point taken. Whenever something is misbehaving, and you can't figure out why, it never hurts to just take it apart and put it back together. I will say that my TP (which is removable) shaves a significant amount of heat off my engine in around-town driving. I did not realize how much until I took it off to do something last summer and drove it around a bit with the pan off. I initially thought there was something wrong with the car as the temps were about 10-12 degrees Celsius higher than normal and the car felt different off-idle. TPs really do make a difference (in addition to looking cool). |
| Cobra #3170 |
04-23-2014 06:46 AM |
Running Rich
Quote:
Originally Posted by BAsque1
(Post 1296965)
Hello Folks:
My 427 S/O is equipped with a turkey pan. This engine is running very rich despite the fact that the timing is by the book. A friend suggested that the turkey pan might create a flow of gas between the 2ndary and primary venturis of the carb creating a rich running engine. Any thoughts on this? I don't think this is correct but hey you never know...Please forgive my lack of FULL knowledge on this topic. I have a 1/2 phenolic spacer and a 770 cfm Holley Carb.
Tks for the input
Basque1 (Lou)
|
Just a thought but, most cars equipped with a turkey pan have a ridiculously
small air cleaner on them that would be appropriate for a riding mower not a 427 cid engine, try removing it if you have that situation. The air cleaner would not make it rich at low throttle application but would at much above that. |
| patrickt |
04-23-2014 06:57 AM |
Quote:
Originally Posted by Cobra #3170
(Post 1297084)
Just a thought but, most cars equipped with a turkey pan have a ridiculously
small air cleaner on them that would be appropriate for a riding mower not a 427 cid engine, try removing it if you have that situation. The air cleaner would not make it rich at low throttle application but would at much above that.
|
Absolutely correct. When I upgraded my air cleaner to a much more free-flowing cleaner I had to not only readjust the mixtures but, because the venturi vacuum was reduced because there was more volume that was now travelling slower, I had to go to a lighter spring to have the secondaries open correctly.
http://www.clubcobra.com/photopost/d.../newfil001.jpg |
| Tim Brewer |
04-23-2014 07:09 AM |
When you say it's running rich, are you saying this because when you start your car in the garage you can't be in there with it because your eyes burn? That's normal.
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| Dimis |
04-23-2014 07:31 AM |
Quote:
Originally Posted by patrickt
(Post 1297087)
Absolutely correct. When I upgraded my air cleaner to a much more free-flowing cleaner I had to not only readjust the mixtures but, because the venturi vacuum was reduced because there was more volume that was now travelling slower, I had to go to a lighter spring to have the secondaries open correctly.
http://208.255.159.239/newfil001.jpg
|
Sorry Lou,
I got nothing, other than ceaning out the air filter... :o
I must say however, that's one nice engine bay you have there Pat.
Do you run that fuel pressure gauge full time, or is it just a plug n play for adjusting settings?
Only reason I ask is bc I like the look of it, but am having 2nd thoughts with all these engine fire stories.
Ps. Sorry for the hi-jack. :( |
| patrickt |
04-23-2014 08:33 AM |
Quote:
Originally Posted by Dimis
(Post 1297092)
I must say however, that's one nice engine bay you have there Pat.
Do you run that fuel pressure gauge full time, or is it just a plug n play for adjusting settings?
Only reason I ask is bc I like the look of it, but am having 2nd thoughts with all these engine fire stories.
|
Well, thank you very much.:) That fuel gauge is there full-time. I've had fuel leaks, but never from that gauge. And they were not "catastrophic" leaks, they were dribbles working themselves up to become catastrophic. But, the nice thing about today's crappy fuels is that a small fuel leak leaves a tell-tale puddle of brown goo that looks like maple syrup. Very easy to detect. The downside of that gauge, and all other gauges like it, is that when the heat hits it from the outside, and the cool gas hits it from the inside, it gets confused and gives out the wrong readings. But, the upside is that it is very consistent with its error pattern, so, once you get to know it, it will tell you what you need to know, even if it is telling you the wrong number.;) |
| CobraV8 |
04-23-2014 09:37 AM |
Quote:
Originally Posted by Cobra #3170
(Post 1297084)
Just a thought but, most cars equipped with a turkey pan have a ridiculously
small air cleaner on them that would be appropriate for a riding mower not a 427 cid engine, try removing it if you have that situation. The air cleaner would not make it rich at low throttle application but would at much above that.
|
Absolutely my thoughts whenever I see one of these turkey pans. The design looks very restricitve, I would never put one on an engine built to make more than 300hp.
Are there any comparison dyno test results with the turkey pan and filter on vs. open carb (no filter/no turkey pan, carb jetted accordingly)?
Simon |
| BAsque1 |
04-23-2014 12:15 PM |
Quote:
Originally Posted by Tim Brewer
(Post 1297090)
When you say it's running rich, are you saying this because when you start your car in the garage you can't be in there with it because your eyes burn? That's normal.
|
No the plugs are black and they only have 1750 miles on them I am using Autolite 45. |
| BAsque1 |
04-23-2014 12:19 PM |
2 Attachment(s)
Quote:
Originally Posted by Dimis
(Post 1297092)
Sorry Lou,
I got nothing, other than ceaning out the air filter... :o
I must say however, that's one nice engine bay you have there Pat.
Do you run that fuel pressure gauge full time, or is it just a plug n play for adjusting settings?
Only reason I ask is bc I like the look of it, but am having 2nd thoughts with all these engine fire stories.
Ps. Sorry for the hi-jack. :(
|
I have a Snellings air filter, I was considering the idea to use a filter from KN which will give me more air flow, like the one posted by Patrick. I will post a picture of my engine next |
| BAsque1 |
04-23-2014 12:26 PM |
Sorry Lou,
I got nothing, other than ceaning out the air filter... :o
I must say however, that's one nice engine bay you have there Pat.
Do you run that fuel pressure gauge full time, or is it just a plug n play for adjusting settings?
Only reason I ask is bc I like the look of it, but am having 2nd thoughts with all these engine fire stories.
Ps. Sorry for the hi-jack. :([/quote]
I have a Snellings air filter, I was considering the idea to use a filter from KN which will give me more air flow, like the one posted by Patrick. I will post a picture of my engine next.
http://www.clubcobra.com/forums/memb...e-oiler-1.html |
| Dimis |
04-23-2014 06:16 PM |
Quote:
Originally Posted by BAsque1
(Post 1297127)
I have a Snellings air filter, I was considering the idea to use a filter from KN which will give me more air flow, like the one posted by Patrick. I will post a picture of my engine next
|
Does it still run rich with out the filter fitted?
If so, your S&H may only be a secondary problem.
PS: My engine builder suggested steering clear of S&H for my particular build due to their poor air flow characteristics. |
| gsharapa |
04-23-2014 08:20 PM |
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| BAsque1 |
04-24-2014 03:35 AM |
Bowls are checked filter air filter is clean, someone suggested colder plugs, I will consider the KN filter.
Tks guys
Lou
|
| BAsque1 |
04-24-2014 12:03 PM |
Quote:
Originally Posted by patrickt
(Post 1297087)
Absolutely correct. When I upgraded my air cleaner to a much more free-flowing cleaner I had to not only readjust the mixtures but, because the venturi vacuum was reduced because there was more volume that was now travelling slower, I had to go to a lighter spring to have the secondaries open correctly.
http://208.255.159.239/newfil001.jpg
|
Patrick:
do you have a part # for this KN air filter?
Tks
Lou |
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