Rust_Bucket (or can I just call you Rusty
Was your frame based on Book dimensions? I came across an interesting discussion about the difference in cowl location on Book-derived frames versus Caterham CSR's here:http://grassrootsmotorsports.com/forum/
At a wee 5'-7", I think I can live with a bit less legroom and push the firewall and engine back a few inches. Hopefully, that will free up enough headroom to clear the valve cover under the hood.
If I could just get my hands on some accurate dimensions of the 1.8L BP enginer, a quick CAD layout would answer a lot of my concerns. Anybody??
"Rusty" is just fine. - My frame was loosly based on the book. It's wider(+2), shorter (in length by around 4 in) and taller(0 at the nose rising to +1 at the dash) as compared to a book frame. Also my lower rails don't taper in as severely as a book frame, they run right to the front lower cross bar. I ran the taper all the way back to the dash so the scuttle is tapered rather than square as in the book, offset the trans tunnel and made it narrower, and the rear end is custom IRS to fit the miata diff and uprights,... so I guess the answer to the question should be: "No, it is not a book frame at all."
GRM forum link... - I couldn't get the link to work. I'll search there sometime when I'm bored.
As far as pushing the firewall back, I did and I would again. I also pushed the dash back quite a bit. Book frames have a LONG distance between the wheel and dash, it looks goofy in my estimation and you have to be a gorilla to reach any knobs...