I took my 1275 Midget to a dyno a couple of years ago.
It pulled 84 hp at the rear wheels. Piper "Fast Road" cam, 1<" SU's, LCB
header and a skinny exhaust pipe. I had taken a die grinder to the head and
tried to "Vizardize" it but it only looked so-so. Still couldn't catch Soave,
but had fun eating MGB's on the boulevard in front of the Dairy Queen. J
Date: Tue, 13 Oct 2009 16:16:45 -0400
From: "Norm 2Bs" <firstname.lastname@example.org>
Subject: [Spridgets] Chassis Dyno H.P.?
To: "Spridgets Digest" <email@example.com>, "Vintage Racing
Content-Type: text/plain; charset="us-ascii"
Took the Turner to a dyno shop. I'm underwhelmed at the results -- only 60
rear-wheel h.p., & 50 ft.lbs. torque. Interestingly, the HP curve, is flat
(but rising steadily) from 3200 rpms all the way to 6200 rpms. And, I mean
FLAT. It climbs from c. 25HP at 3200 straight up to 60 at 6300.
Torque curve is flat & level from 4000 to max.
Another interesting observation -- going from a 1-3/4" straight pipe to a
reducer to 1-1/2" & then through the original muffler increased the H.P. by
a little over 2 HP. This is on a 948 that is now c. 1,000 cc with APT
Vintage cam, flat-top pistons, 1-1/2" SUs, & Longman GT6 big-valve head.
Based on results, it will need a better crank to take advantage of the still
climbing power "curve."
Now comes the engine swap to the ex-HP Huffaker engine & back to the dyno
shop with that one.
Any of you Spridget guys had your cars on a dyno? What results?
'59 Turner #47
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