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2.3 race Pinto on Ebay NTDWM
donut - 19/1/06 at 06:38 PM

http://cgi.ebay.co.uk/RACE-TUNED-2-3-P INTO-ENGINE_W0QQitemZ4606337949QQcategoryZ100921QQrdZ1QQcmdZViewItem

[Edited on 19/1/06 by donut]

flak monkey - 19/1/06 at 06:44 PM

Saw that earlier. Nice looking motor, no detailed spec in the description though which is always a worry. Plus its only got single coil valve springs on...a bit odd for a 'race' engine...

David

gazza285 - 19/1/06 at 07:57 PM

"Plus its only got single coil valve springs on...a bit odd for a 'race' engine... "

Not really. It's a long stroke engine so the rev limit is not going to be astronomical, and as it's an overhead cam engine there isn't as much valve gear mass to return and you can get pretty heavy duty single springs for the Pinto. I think a lot of people fit duplex valve springs for the black cat factor, when most of the time it's not needed.

flak monkey - 19/1/06 at 08:21 PM

quote:
Originally posted by gazza285
"Plus its only got single coil valve springs on...a bit odd for a 'race' engine... "

Not really. It's a long stroke engine so the rev limit is not going to be astronomical, and as it's an overhead cam engine there isn't as much valve gear mass to return and you can get pretty heavy duty single springs for the Pinto. I think a lot of people fit duplex valve springs for the black cat factor, when most of the time it's not needed.


Was just going by whats suggested in Des Hamills book. Most 'race' engines would rev to at least 7500rpm, even a 2.3 I would think. Engines routinely revved to more than 7k higher spring rate valve springs are needed to avoid valve bounce. Most people use double valve springs to get the desired 'over the nose' pressure. But as you say it is possible with single coil springs.

Cheers,
David

[Edited on 19/1/06 by flak monkey]