Cylinders 1&2 colder than 3&4 and lack of power
- Vic Skirmants
- Registry Hall of Fame
- Posts: 9304
- Joined: Tue Oct 27, 2009 5:02 pm
- Location: SE Michigan
- Contact:
Re: Cylinders 1&2 colder than 3&4 and lack of power
Add an extra spark plug gasket.
- C J Murray
- 356 Fan
- Posts: 9236
- Joined: Fri Oct 23, 2009 7:24 pm
- Location: 30MI WEST OF PHILA
- Contact:
Re: Cylinders 1&2 colder than 3&4 and lack of power
That could expose a thread in the cylinder head spark plug hole which could lead to a hot spot and detonation while pulling those long straights at Le Mans.Vic Skirmants wrote:Add an extra spark plug gasket.
It is better to use the plug that fits your engine.
'57 Speedster
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
- Vic Skirmants
- Registry Hall of Fame
- Posts: 9304
- Joined: Tue Oct 27, 2009 5:02 pm
- Location: SE Michigan
- Contact:
Re: Cylinders 1&2 colder than 3&4 and lack of power
Do it on the race engines every time.
-
- 356 Fan
- Posts: 4184
- Joined: Sun Apr 20, 2008 12:54 am
Re: Cylinders 1&2 colder than 3&4 and lack of power
No problem adding the 7mm braided fuel hose to 8mm steel lines as long as there aren't any sharp 'burrs' on the ends of the lines.
Also using a little Syl Glyde (not oil) for ease of insertion; Once on, I don't use/need clamps and just use hose end caps w/o crimping.
Bosch W6BC spark plugs have extended tips.
Also using a little Syl Glyde (not oil) for ease of insertion; Once on, I don't use/need clamps and just use hose end caps w/o crimping.
Bosch W6BC spark plugs have extended tips.
- C J Murray
- 356 Fan
- Posts: 9236
- Joined: Fri Oct 23, 2009 7:24 pm
- Location: 30MI WEST OF PHILA
- Contact:
Re: Cylinders 1&2 colder than 3&4 and lack of power
You don't race at Le Mans.Vic Skirmants wrote:Do it on the race engines every time.
'57 Speedster
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
-
- 356 Fan
- Posts: 224
- Joined: Mon Apr 14, 2014 2:43 pm
- Location: Birmingham, Alabama
Re: Cylinders 1&2 colder than 3&4 and lack of power
I decided to add a smashed down washer, went for a ride and all the symptoms went away... prrrrrreeeeettycool!
So I'm gona try the NGK... Which one is hotter B6HS or B7HS?
So I'm gona try the NGK... Which one is hotter B6HS or B7HS?
- C J Murray
- 356 Fan
- Posts: 9236
- Joined: Fri Oct 23, 2009 7:24 pm
- Location: 30MI WEST OF PHILA
- Contact:
Re: Cylinders 1&2 colder than 3&4 and lack of power
6 is hotter than 7
'57 Speedster
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
- Vic Skirmants
- Registry Hall of Fame
- Posts: 9304
- Joined: Tue Oct 27, 2009 5:02 pm
- Location: SE Michigan
- Contact:
Re: Cylinders 1&2 colder than 3&4 and lack of power
I just love spark plug makers. One has the smaller number as hotter, and another has the smaller number as colder!
Go figure.
Go figure.
- C J Murray
- 356 Fan
- Posts: 9236
- Joined: Fri Oct 23, 2009 7:24 pm
- Location: 30MI WEST OF PHILA
- Contact:
Re: Cylinders 1&2 colder than 3&4 and lack of power
Use surface gap plugs, they have no heat range.
'57 Speedster
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
-
- 356 Fan
- Posts: 224
- Joined: Mon Apr 14, 2014 2:43 pm
- Location: Birmingham, Alabama
Re: Cylinders 1&2 colder than 3&4 and lack of power
The car is running strong...
CJ what surface gap plug would you recommend? I definetely would like to try it.
CJ what surface gap plug would you recommend? I definetely would like to try it.
- C J Murray
- 356 Fan
- Posts: 9236
- Joined: Fri Oct 23, 2009 7:24 pm
- Location: 30MI WEST OF PHILA
- Contact:
Re: Cylinders 1&2 colder than 3&4 and lack of power
I use 12mm plugs so I found a Champion surface gap plug that works. I wouldn't use a surface gap plug on a street engine. I don't think it has enough "range" for all the various street conditions. If you try one for street use let us know what happens. I suggest using a very strong ignition.Miguel Antonetti wrote:The car is running strong...
CJ what surface gap plug would you recommend? I definetely would like to try it.
'57 Speedster
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
-
- 356 Fan
- Posts: 224
- Joined: Mon Apr 14, 2014 2:43 pm
- Location: Birmingham, Alabama
Re: Cylinders 1&2 colder than 3&4 and lack of power
Many thanks CJ!
My engine is stock with the exception of the webers... soooo your answer placed this "try" ways low in the priority list...
My engine is stock with the exception of the webers... soooo your answer placed this "try" ways low in the priority list...