Missfire on turbo

[Studoublem]

I have a turbo 172 ( running about 240 bhp ) this is a track car only but I have a missfire on high revs this will get worse when the engine is hot , first lap it’s not so noticeable.
Has anyone had a problem with the coil pack getting too hot from the turbo being just underneath ?

Or could this be something else ?

Stu

 

[R3k1355]

What plugs and plug gap are you using?

 

[Clio.lee]

Could be fuel pump

 

[Studoublem]

What plugs and plug gap are you using?

What plugs and plug gap are you using?

Hi plugs are NGK R BCR8ES not sure what gap I’ve set them too.

 

[Studoublem]

Could be fuel pump

If it is do you recommend a replacement ?

 

[Clio.lee]

Depends what power your running. Might just be worn out

 

[Studoublem]

Depends what power your running. Might just be worn out

240 bhp

 

[R3k1355]

Hi plugs are NGK R BCR8ES not sure what gap I’ve set them too.

Grade 8 plugs are usually too much for that power level, but you might be alrite if the compression is high.
Gap is pretty critical, deffo get some feeler gauges, 0.7-0.9mm is a pretty normal range.

 

[Studoublem]

Grade 8 plugs are usually too much for that power level, but you might be alrite if the compression is high.
Gap is pretty critical, deffo get some feeler gauges, 0.7-0.9mm is a pretty normal range.

I’m going to try some iridium set 7

 

[R3k1355]

Iridium plugs are a sod to gap correctly, the coppers are way easier and let you easily check several gap settings.

 

[Studoublem]

Hi plugs are NGK R BCR8ES not sure what gap I’ve set them too.

Iridium plugs are a sod to gap correctly, the coppers are way easier and let you easily check several gap settings.

Umm, Think im going to change Coil Pack and plugs and go from there, are you ruuning a turbo convertion.