PDA

View Full Version : Need input on Cam choice!



Nate Ward
03-12-2003, 09:17 PM
Hi!

This BBS is great! My '73MGB and I have just registered. Thank you in advance for your input.

OK, to make a long story short I need some input on MGB Cams.

I built an engine that is:

bored 30 over
fully balanced
head DIY ported as per P.Burgess.
Dual valve springs/ standard ratio rockers
stock 1.5"SU's (may upgrade)
Stock header and free flow exhaust (may upgrade)

I deliberated over what cam to buy and had one custom ground to the following specs:

.298" cam lift, 228 degree duration @ .050"
106 degree installed centreline
106 degree LSA


My questions are:

Has anyone used a cam like this?
If so, what will the engine run like?
I will check for coil binding and valve to block/ piston clearance but with this lift should I expect interference despite the stock 'eyebrows' cut into my 18v block?

I don't mind it being lumpy, but when it comes down to it 95% of the cars use is daily 'spirited' driving.

Also, how crucial is it to harden the cam and hardness test the lifters?

I have already checked out www.mgbmga.com (https://www.mgbmga.com) and am well aware of Doug Jacksons strong beliefs.

But David Anton of APT recommended the cam and he also REALLY knows his stuff. www.aptfast.com (https://www.aptfast.com) & www.aptfast.com/cam_chart/cam_chart.htm (https://www.aptfast.com/cam_chart/cam_chart.htm)

That is why I am looking for more input!

Nathan

1973 MGB (Victoria) graemlins/canpatriot.gif

Gary Lloyd
03-12-2003, 11:02 PM
Hi again Nathan!! images/icons/smile.gif graemlins/canpatriot.gif

Dale
03-12-2003, 11:58 PM
Welcome Nate! Can't help you out on your questions, though it sure sounds like you know what you're doing. You will get responses soon I'm sure. Keep posting and good luck with your LBC. graemlins/patriot.gif