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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #11  
Old 9th August 2020
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small block chevy is 4'' bore.
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  #12  
Old 10th August 2020
Staffords Staffords is offline
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I decided for $30 I might as well snatch up a set of these: https://www.ebay.com/itm/New-TRW-Pow...edirect=mobile
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Old 10th August 2020
Nitro57xl Nitro57xl is offline
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I think that's a smoking deal for a set of new pistons! Get some new repop cylinders to go with them since they are standard bore. I hope you don't still think these rare 9.22 to 1? They are not. But they will run good and you will like them As long as you run good gas in it?
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  #14  
Old 10th August 2020
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Quote:
Originally Posted by Nitro57xl View Post
I think that's a smoking deal for a set of new pistons! Get some new repop cylinders to go with them since they are standard bore. I hope you don't still think these rare 9.22 to 1? They are not. But they will run good and you will like them As long as you run good gas in it?
9.22 to 1 is what the spec sheet says. I have a set of the more common 17550 TRW forged pistons 9:1 that I will compare (height and dome) against. I'm building a 61 CH and I'm not planning on dual plugging my heads, so if they're really much higher CR I probably won't run them.
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Old 10th August 2020
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if the domes are taller on these you could remove some material 'til they matched?
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