The following warnings occurred:
Warning [2] Undefined variable $search_thread - Line: 60 - File: showthread.php(1617) : eval()'d code PHP 8.1.31 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/showthread.php(1617) : eval()'d code 60 errorHandler->error_callback
/showthread.php 1617 eval



Austinsevenfriends › Austin Seven Friends Forum › Forum chat... v
Racing plugs?

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Threaded Mode
Racing plugs?
Dirk73 Offline
Junior Member
**
Joined: Jan 2019 Posts: 48 Threads: 9
Reputation: 0
#1
30-08-2023, 08:21 PM
I wonder if anyone in the A7 racing fraternity could recommend a good plug? I've been using the Champion D16 18mm as available from our cherished suppliers but have had a few failures.

I've got a set of 18mm-14mm adaptors so could change to a 14mm plug if that gives more options. The engine is fairly hot (blown 12psi). 
Any suggestions very welcome Smile
Reply
David Cochrane Offline
Member
****
Joined: Aug 2017 Posts: 484 Threads: 14
Reputation: 9
Location: Dunchurch, Warwickshire
#2
30-08-2023, 08:55 PM
The Champion D21 18mm plugs seem to work better than the D16s and are available from the Cherished Suppliers.
http://www.a7c.co.uk
Reply
Howard Wright Offline
Grey Mag editor
*****
Joined: May 2018 Posts: 2,110 Threads: 110
Reputation: 22
Location: Llandrindod Wells
Car type: 29 Special, 30 RK, 28 C Cab
#3
31-08-2023, 12:02 PM
+1 for D21s.  They work well on my Special with a Ricardo head!

Cheers

Howard
Reply
Charles P Offline
Eternal Repairer
*****
Joined: Aug 2017 Posts: 1,534 Threads: 60
Reputation: 20
#4
31-08-2023, 12:31 PM
I've found the older style NGK A6's (not AB6) work well with my blown car.


Charles
Reply


Forum Jump:


Users browsing this thread: 1 Guest(s)