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Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Tue Oct 16, 2018 7:50 am
by Vic Skirmants
Add an extra spark plug gasket.
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Tue Oct 16, 2018 9:11 am
by C J Murray
Vic Skirmants wrote:Add an extra spark plug gasket.
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.
It is better to use the plug that fits your engine.
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Tue Oct 16, 2018 9:23 am
by Vic Skirmants
Do it on the race engines every time.
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Tue Oct 16, 2018 10:14 am
by Dick Weiss
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.
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Tue Oct 16, 2018 10:28 am
by C J Murray
Vic Skirmants wrote:Do it on the race engines every time.
You don't race at Le Mans.
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Tue Oct 16, 2018 11:26 pm
by Miguel Antonetti
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?
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Wed Oct 17, 2018 6:58 am
by C J Murray
6 is hotter than 7
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Wed Oct 17, 2018 7:54 am
by Vic Skirmants
I just love spark plug makers. One has the smaller number as hotter, and another has the smaller number as colder!
Go figure.
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Wed Oct 17, 2018 8:00 am
by C J Murray
Use surface gap plugs, they have no heat range.
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Tue Nov 06, 2018 12:07 am
by Miguel Antonetti
The car is running strong...
CJ what surface gap plug would you recommend? I definetely would like to try it.
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Tue Nov 06, 2018 7:49 am
by C J Murray
Miguel Antonetti wrote:The car is running strong...
CJ what surface gap plug would you recommend? I definetely would like to try it.
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.
Re: Cylinders 1&2 colder than 3&4 and lack of power
Posted: Thu Nov 08, 2018 2:45 pm
by Miguel Antonetti
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...