Stroker Build - How would you do it?

[johnymd]

I could Jon but I feel my spike head is way too valuable to use so I’ve had a hermetically sealed in a glass display case made so I can invite people round to view this work of art.

 

[johnymd]

Do Kameari produce custom pistons? I could only see standard replacements on their site.

 

[bluejon]

After loads of looking at various rod lengths and ratios I’ve been told by an Oz engine builder not to get too carried away with this and it’s only a 1 percenter in terms of the overall build, 1st thing to look at is getting the block sonic tested for bore thickness before you commit to your bore dia. If you can then find the right piston for a set of L24 rods I reckon you’re in business.
The Toyota R20 pistons look worth a look, are they 30mm ish compression height?

I did now dig a bit more into the info I have. I can't see any reference to compression height of the Toyota pistons, just mention of a 3.1 inch stroke.

 

[Albrecht]

Do Kameari produce custom pistons? I could only see standard replacements on their site.

Seriously? What site were you looking at?

http://www.kameariengineworks.co.jp/Catalogue-v3/catalogue-005-2-2.pdf

http://www.kameariengineworks.co.jp/Catalogue-v3/catalogue-005-L20.pdf

http://www.kameariengineworks.co.jp/Catalogue-v3/catalogue-new-Leng-WEB2015.9.4.pdf

http://www.kameariengineworks.co.jp/Catalogue-v3/catalogue-006-L2.pdf

http://www.kameariengineworks.co.jp/Catalogue-v3/catalogue-007-L3.pdf

http://www.kameariengineworks.co.jp/Catalogue-v3/catalogue-013PISTONRING01.pdf

http://www.kameariengineworks.co.jp/Catalogue-v3/catalogue-014PISTONRING02.pdf

 

[Turn & Burn]

I know I’m awkward but I wanted 88mm with a low compression height! Still not seeing a good 88mm choice. You can have 87mm (high compression height) or 88.5mm (ideal comp height) which may be getting marginal on bore. I’ve not tested the block yet tho so don’t know what I’ve got to play with.

 

[richiep]

You can custom order 88mm pistons from JE Pistons to the spec you want if the Kameari options don’t do it for you.

As for bore and issues such as core shift, wall thickness, etc., there is a serious lack of imagination on the web, mainly stemming from the fact that most of the English language discussion of the topic is US-derived. E.g., just because there seems to be a lack of choice in the States with respect to engine shops capable of doing metric block sleeving (or it’s considered too expensive) doesn’t mean we have the same problem.

89mm and up isn’t an issue when the cylinder bore is brand new with a known wall thickness...