Best Spark Plugs, 16psi & Megejolt
Turbo Mini Forums

Hi Guys,

Any ideas on best plugs for my newly build turbo engine. Im running T2 / T25 on mirage manifolds, Benross head, 1293 10cc omegas, Phase 2 Cam, custom IC & mega Jolt. Im looking at running 12psi normally and 16-18psi for the strip. I getting confused with B8ES, BP8ES & BPR8ES and then the range of platimum plugs, can anybody explain the difference?

What are you guys running and any recommendations on cheapest place to buy.

Heres a picture of my build so far, Ive just awaiting my manifolds from mirage, looking more and more likely I'll not be racing at Avonpark

thanks Matt

Edited by alaskanow0 on 3rd Jan, 2011.

Class C 3rd Place Avon 2011 14.18 @101mph

Your spec is similar to mine and I run NGK BP7ES, cant remember who on here advised me to run them and why, But I think I posted a thread on it?
Shane

Ive searched but cant find it in the bookmarks ive made, may have been on my desktop not laptop, its either that or the altzimers is kicking in........ at least ive not got altzimers.
Shane

I believe you are supposed to use the BPR rather than BP's with megajolt...could be wrong though!

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

I found the BPR8ES for £1.25 each on ebay, but they are listed for YAMAHA 900 XJ900F/S (83-94) NGK SPARK PLUG BPR8ES 3923.

http://cgi.ebay.co.uk/YAMAHA-900-XJ900F-S-...=item2a070495f7

Edited by alaskanow0 on 6th Jun, 2010.

Class C 3rd Place Avon 2011 14.18 @101mph

hi mate you may want to make up a steady to stop your alternator form twisting. good luck with the plugs, im trying to do the same.

sorry forgot to say if its a denzo

Edited by wintersurferuk on 6th Jun, 2010.

Thanks for the advise, I was thinking the same thing. I might even replaced the alternator with one from Brise, as its supported in 2 places and comes with brackets etc.

Class C 3rd Place Avon 2011 14.18 @101mph

I had this in my mind too, resistive is meant to reduce electrical noise or interference with ecu?

You need to use resistive plugs to help stop interference. So the ones with "R" in the number are the right ones.

WWW.TURBO-MINI.COM

Thanks Phil,

which do you think BPR7's or BPR8's?

Class C 3rd Place Avon 2011 14.18 @101mph

I was running B9EGV's in mine

I ran the BPR8ES plugs, but if the engine was slightly on the cold side, they would cause to engine to miss and jolt on acceleration. Im sure the BPR7ES plugs would of been better as it was mainly used on the road.

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

I would use 7's. You'll find anything colder will tend to foul easily on the road. I run sevens without issue, my boost is set to a minimum of 15psi.

WWW.TURBO-MINI.COM

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

I ran i think 8's with absolutely no issues at all. The ones i used were escort RS turbo plugs. NGK copper core jobs or something. Still got a brand new set somewhere

I use 8s on the race car and 7s on the road car.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

The A35 runs on 8,s no prob.8.5:1 CR and 12 psi - bit more when I see red, as at Avon maybe ?.

Idles and runs slow in traffic without any fouling probs

I wouldnt worry, mines bolted up the same and after a year running it ive had no issue what so ever.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

mike probably right.

keep that one and use the standard bracket with a long threaded stud through it with a sleave over the top, i havent got any pics but oneeyed has some on his build thread, using an old tent pole for the sleave to stop it twisting, if it twists, im just making sure.

have a look at oneeyed,
http://www.turbominis.co.uk/forums/index.p...d=191396&fr=150

nice build mate by the way

sorry to hijack but are those omega 18cc dished? i am looking at these myself if so. Also if thats the case did you increase head cc or just go with standard and let pistons lower CR enough?

cheers

colin

I needed to reduce the chambers when using those pistons.

In the 13's at last!.. Just

thanks for reply. Just getting ideas of work ahead :)

ARP's!! Nice!

If something is worth doing, it's worth doing half of.