K25 Engine Compression Limits on E85
#1
K25 Engine Compression Limits on E85
What is the compression limit of pump e85 on a sleeved k2.5 liter? Can I run 14:1- 15:1? I don't want to run any other type fuel.
Also, can somone recommend a IM for that high of compression. Head is 4Piston 163. I do not want ITBs.
Thanks
Also, can somone recommend a IM for that high of compression. Head is 4Piston 163. I do not want ITBs.
Thanks
#2
Honda-Tech Member
Re: K25 Engine Compression Limits on E85
Ported and polished ultra race manifold, with plenum spacer. Anywhere from 14:1 -> 15:1 compression would likely work, I know that Luke/4Piston themselves say that 14.2:1 is ideal for these builds, I think Wiseco may actually have an off the shelf option for that.
Hope this is a race engine and you're running some monster cams on it.
Hope this is a race engine and you're running some monster cams on it.
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