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Topics - longtimeracer

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Roo Man's Room / chassis top rail has bowed outwards
« on: November 13, 2020, 05:02:35 AM »
Got a bit of a conundrum with my FED, its a 150" mild steel chassis with an injected Chevy small block. The chassis is 5 years old, built to SFI 7.50. Only done 30 runs as I only do 3 meetings a year, its a hobby car, not ultra serious but I don't stint on what it needs. Its a regular low 9 second car but got it into the 8s in 2019. Taking the motor out, I noticed that the offside top chassis rail(that's the right-side from the drivers seat) is bowed out by about 3/4". At the front the motor mounts on saddle brackets held with Micalor hose type clips. I'm thinking that in a wheel stand the right side front motor mount slipped because of the weight of the motor and then pushed the chassis rail out? Also the torque reaction of the motor would tend to push the motor down and push against the right hand side chassis rail which might worsen the effect of a wheel stand. These are thoughts that I've had. Regarding saddle mounts, wouldn't these work better if dowelled? Of course I've got to get it fixed or may be front halved? I would be very interested in what you guys think, having a bit more experience than me, thanks.

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Spud Miller's Cave / Acetone in methanol - good or bad idea
« on: October 02, 2018, 03:13:58 AM »
This year I tried 3% acetone in methanol, more as an aid to staring the engine from cold rather than extra power. It certainly helped with the first cold start, fired up quicker and felt stronger before getting up to race temperature. I've found now that my Enderle fuel pump has definitely gone off. I had to go from a 75 pill (when admittedly the engine was too rich, but running clean), down to a 50 to get within 3 tenths of my previous best time. Could the acetone have damaged the pump? ( I have been following all the recommended procedures to clean the system after each race) I'm in the UK, not sure if you guys in the US use acetone, our motor cycling sprinters use it over here, so its not unknown. Would welcome your comments

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