Jump to content

Recommended Posts

1 hour ago, Richard Crawley said:

Decided to stick with standard NGK plugs in the end as cylinders 1-4 never seem to have a problem so have ordered 4 x BP6ES & 2 x BP5ES for cylinders 5 & 6. Thanks to all for your input.

One presumes you have cleaned the plenum chamber inside?

Link to post
Share on other sites
2 hours ago, Richard Crawley said:

Not sure what that would do as it's the clean air side of the throttle bodies so just clean & filtered air comming through there! I do keep the air filter in good order though.

It’s fact by design that oil mist and condensed vapour collect at the low point you don’t have this problem with Weber’s or SUs

Link to post
Share on other sites
18 hours ago, Z320 said:

The gap on all of my Bosch WR78G is about 0.8 mm and it is not designed to adjust, 

and it is OK this way

Hello Marco

                   They are probably ok on standard coil system at 0.030" to 0.035" but the 1.1mm (0.040" to 0.044") would probably miss fire.

I run a VW Bosch type coil pack which gives higher voltage as all moderns do

Roger

Link to post
Share on other sites

Neil, Richard,

Just to help my understanding:- the oil mist and condensed vapours come from the rocker cover connection to the plenum chamber?. I have got the arrestor set up so it drains back as much as it can to the rocker but even with that I can see there will be vapours / mist that will carry into the air plenum. I did last year clean up / set up the throttle and air systems. The air plenum was dirty inside and gave it good clean but probably first time its been cleaned in 20 + years so not too bad I thought. I also change air filter pretty regularly as I do get dust although it is mainly on one side of filter. But hadn’t linked carry over from rocker cover with plug condition - useful to know.

Link to post
Share on other sites

Martin 

Your understanding is correct however the cars are not used as they use to be add to that the rear of the engine does not run hot lack of use and short journeys will magnify the the problem 

Link to post
Share on other sites
2 hours ago, ntc said:

It’s fact by design that oil mist and condensed vapour collect at the low point you don’t have this problem with Weber’s or SUs

I understand the rocker cover breather is attached but there is an in-line arrestor & in all the years I've had the car, I've never had problems with emulsification inside the plenum. Thre plenum was fine inside when cleaned, refurbished & rebuilt @ 82k miles & the car still hasn't reached 90k miles since but that's another story!

Link to post
Share on other sites
  • 2 weeks later...

I personally would not recommend a hotter plug in #5 & #6. Fix the problem?
If i had a "Lumenition" system, I would buy the lowest Ohmic coil it could drive. If it can only drive a "Lucas Sports coil", then not much more energy than OEM.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

Please familiarise yourself with our Terms and Conditions. By using this site, you agree to the following: Terms of Use.