Heat range with alcohol

[lost2a6]

I'm getting ready to install razors alky kit on my car. What should I do about heat range on the plugs. I'll be using pump gas with the alky. If I recall, I currently have the R43TS. It has iron heads. Thanks.

 

[Razor]

Gn-1 use R43'ts? Just gap them down to .030-.032 and start the process. 99% of your driving is on the street, stay with a stock plug one heat range colder gapped down. The worse thing you can do is run a cold plug that fouls.. then put the car under heavy load(boost) and have a problem firing a fouled plug. Understand that pistons are designed to be pushed down, not yanked down by the rod. That is why there is very little meat under the wrist pin.

If its a track car.. then you can experiment with much colder plugs. Altho the power is really in the turbo/heads/cam

If its the smaller plug a Tr6 NGK at .030 is a good start. 3944, ac23's, etc.

 

[lost2a6]

I might of got this car confused with my GN which does have the GN-1's. Anyway the car will be mostly street driven, thanks for the info.