What kind of 0-60 should I expect?
Posted: Thu Jan 12, 2017 12:41 am
Well, after working on my 69 S4 over the past 18 months an intervention has occurred and I am now sequestered some 1500 miles away in a warm(er) climate from Northern California unable to work on the car for the next two months. The car sits at home awaiting my return.
I was getting close and undoubtedly would have finished the car (or at least made it roadworthy) in these two months. So I am left to conjecture about what kind of performance I might expect from my uprated S4. I have been looking in particular at 0-60 times and trying to calculate based upon weight, horsepower, and torque ratios compared to known times for other cars. Clearly, there are many factors but my hp/weight and torque/weight are a significant departure from my original stock (formerly Stromberg, now 40 DCOE Weber), 1700 cc vs 1558, 181 horsepower, 143 torque (virtually flat from 4000-7000). This is a street, not race engine, redline 7000, not a peaky, high rpm, hp bomb.
I was able to squeeze 185/60VR13 Toyo R888R tires on the car, by the skin of my teeth. Just cleared the arch on the left rear side and I will need to remove maybe 1/16-1/8" on the right rear but the tires actually clear throughout full travel.. Steering wheel lock slightly reduced to not foul the ARB. All the other bits are also uprated (forged axles, prop-shaft, diff brace, Quaife ATB, etc. Lightened bits (bell housing, flywheel, etc.) 26R K/O wheels (5"). Stock arches. So the car looks stock from the outside (except for wheels/ tires) and perhaps the TTR large exhaust.
So, a Sprint, back in the day, was sometimes reported to have achieved a 6.6 sec 0-60 time. Just ratioing my reduced weight, and 44% more hp and 23% more torque (also broader curve) I get a 0-60 time of between 4.5 and 5.0 secs. Also, have done this for numerous other cars and can get somewhat similar results. There are also 0-60 calculators on line but these seem to provide a rather optimistic sub 4.0 to 4.3 secs. (BTW I have the 3.77 diff).
Curious if anyone has real experience with an Elan of a substantially uprated spec, as I am left to twiddle my thumbs for the next two months and can only dream about my future drive.
I was getting close and undoubtedly would have finished the car (or at least made it roadworthy) in these two months. So I am left to conjecture about what kind of performance I might expect from my uprated S4. I have been looking in particular at 0-60 times and trying to calculate based upon weight, horsepower, and torque ratios compared to known times for other cars. Clearly, there are many factors but my hp/weight and torque/weight are a significant departure from my original stock (formerly Stromberg, now 40 DCOE Weber), 1700 cc vs 1558, 181 horsepower, 143 torque (virtually flat from 4000-7000). This is a street, not race engine, redline 7000, not a peaky, high rpm, hp bomb.
I was able to squeeze 185/60VR13 Toyo R888R tires on the car, by the skin of my teeth. Just cleared the arch on the left rear side and I will need to remove maybe 1/16-1/8" on the right rear but the tires actually clear throughout full travel.. Steering wheel lock slightly reduced to not foul the ARB. All the other bits are also uprated (forged axles, prop-shaft, diff brace, Quaife ATB, etc. Lightened bits (bell housing, flywheel, etc.) 26R K/O wheels (5"). Stock arches. So the car looks stock from the outside (except for wheels/ tires) and perhaps the TTR large exhaust.
So, a Sprint, back in the day, was sometimes reported to have achieved a 6.6 sec 0-60 time. Just ratioing my reduced weight, and 44% more hp and 23% more torque (also broader curve) I get a 0-60 time of between 4.5 and 5.0 secs. Also, have done this for numerous other cars and can get somewhat similar results. There are also 0-60 calculators on line but these seem to provide a rather optimistic sub 4.0 to 4.3 secs. (BTW I have the 3.77 diff).
Curious if anyone has real experience with an Elan of a substantially uprated spec, as I am left to twiddle my thumbs for the next two months and can only dream about my future drive.