Recently I got the idea to port out the cast exhaust manifolds. Knowing that there are areas (most in fact) that a grinder can't reach I was considering using acid to clean/enlarge the exhaust manifo
Hi Tom, I think hydrogen embrittlement is what you're looking for, and one (possibly expensive) way to actually do the exhaust manifolds might be to Extrude-Hone them. Other than their ads in GRM, I
I had a stock aluminum GM big block intake manifold done by Extrude Hone. The cost was $425 and it took somewhere around 6 weeks to get it done. I had my engine dyno'ed and it helped a lot. However,
You mention price/HP ratio and it is an interesting subject. Hot Rod magazine has done a few studies accepting the fact that a car will get faster by either increasing the HP or reducing the weight o
I had to look it up in my files, but both the HP and Torque increased by 30 which represented a total of about a 5% increase. The car is a Corvette and has an all fiberglas body. If you are willing
Here is something to ponder. Electrohone is a fine process for smoothing out hard to reach places, and even achieving a high polish at a reasonable (compared to mechanical methods) costs. However, a
I can vouch for the price/HP effectiveness of Nitrous. My nearly stock 260 (torquer intake and 600cfm Edelbrock carb) was faster than my 345 HP 306ci is when not using the bottle. Having said that, r
ahhh, um, er...a car wil not go faster with lighter weight. It will be quicker to reach a top speed. But top speed is an aero thing with rolling resistance thrown in. It may be faster in a given drag
You speak like a man who has miles to go to reach his top speed. Maybe that is because you DO have MILES to go before you need to reach your record speed. Most of us lunkers just want to get to the