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Which pinto cam?
2b_pablo - 8/10/07 at 09:44 AM

Currently running a Burton BLF40.41 rally cam which I think is a little lairy for the car.

So Im thinking of changing to a fast road type cam to make better power lower in the rev range and maybe work a bit better with the twin 40s.

Any recommendations?

2.1 pinto
ported head
leccy ignition
twin weber 40s

thanks

ash_hammond - 8/10/07 at 09:48 AM

Piper 285 - not a lary cam, nice smooth power delivery.

- Ash

macspeedy - 8/10/07 at 09:48 AM

I was running fully balanced, flowed head 2 ltr with 45's with a kent fr32 cam kit, very torquey very driveable once we had the timing running right, we had a homemade electronic brain for advance, I have the advance curve figures i can send you.

Mac

2b_pablo - 8/10/07 at 09:57 AM

my ignition isnt adjustable tho, its the bestek system

mark chandler - 8/10/07 at 09:58 AM

Before binning what you have got try advancing the cam a bit, around 7 degrees will pull in some mid range and bottom end power.

2b_pablo - 8/10/07 at 10:01 AM

its around 11deg atm if that helps

2b_pablo - 8/10/07 at 10:04 AM

40.41 cam is:

.450" LIFT/324deg DURATION:

mookaloid - 8/10/07 at 10:31 AM

quote:
Originally posted by 2b_pablo
40.41 cam is:

.450" LIFT/324deg DURATION:


That cam does seem a rather wild for road use - that duration is for a full race cam. I would recommend some thing with a duration of 280 - 300deg. Since you have a gas flowed head, I would go for nearer the 300deg as you will be wasting the abilities of the gas flowed head otherwise.

HTH

Mark

2b_pablo - 8/10/07 at 10:36 AM

Burton do this one:

BURTON ROAD/RALLY CAMSHAFT .460" LIFT/300deg DURATION: SOHC PINTO

might calm things a bit. Its drives ok but Ive a feeling when the carbs are running out of puff the cam is just getting going at the minute.

mookaloid - 8/10/07 at 10:47 AM

quote:
Originally posted by 2b_pablo
Burton do this one:

BURTON ROAD/RALLY CAMSHAFT .460" LIFT/300deg DURATION: SOHC PINTO

might calm things a bit. Its drives ok but Ive a feeling when the carbs are running out of puff the cam is just getting going at the minute.


Sounds about right - You might want to check you have the maximum choke sizes you can get in your 40's i.e. 36mm

Cheers

mark

[Edited on 8/10/07 by mookaloid]

2b_pablo - 8/10/07 at 10:49 AM

cheers

would I need to get all the kit parts as well? The 40.41 wont have been in too long really so wont have suffered from much wear.

mookaloid - 8/10/07 at 10:51 AM

quote:
Originally posted by 2b_pablo
cheers

would I need to get all the kit parts as well? The 40.41 wont have been in too long really so wont have suffered from much wear.


Ideally you should use new followers at least....

Cheers

mark

DarrenW - 8/10/07 at 12:54 PM

ive got the Fr32 but suspect it may be a bit tame for you. Mookys went very well ideed with the FR33.

i think Alistair at AMAC Engineering has been getting a new batch of his special pinto cams in as well recently. No idea of the spec but he seems to be able to exploit the best a Pinto can give with them.