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Henrys Toy · 05-06-2021, 11:51 AM

The small valve ( 1.94/ 1.50 ) 186 castings should also be good.
Check for ex. seat cracks in the two center cylinders and if they are not cracked, those would be about the Best Stock castings to use.
As per usual if you can find a couple of pairs, crack check and flow test then picking the best pair. You should be happy with the final outcome.

05-06-2021, 11:51 AM	#3
Henrys Toy Member Join Date: Oct 2020 Posts: 269 Likes: 3,723 Liked 520 Times in 176 Posts	Re: replacement Stock heads The small valve ( 1.94/ 1.50 ) 186 castings should also be good. Check for ex. seat cracks in the two center cylinders and if they are not cracked, those would be about the Best Stock castings to use. As per usual if you can find a couple of pairs, crack check and flow test then picking the best pair. You should be happy with the final outcome.