Recent content by 61Klassic

Thanks Ronnie. Any others?

Hi all, I'm trying to find out which, if any of the flathead 4x2 intakes had individual runners as opposed to a plenum. I did try posting on the HAMB, but little response. Thanks guys. Kev

No other opinions? I hope some old time lakes racers, Pete etc would have something to say?

Thanks Ronnie. I didn’t know if 97’s like having air pushed through them, some carbs don’t. I know there is a possibility of running lean, but with a flatty running out of air high up the Rev range, but still having the correct jets to supply the fuel...? As I said I have an a/f gauge hooked...

Thanks 🙄🙂 Not an option at the moment as I run normally aspirated in my class over here in the UK

Hi everyone. I have a model A roadster with a full hood, running a healthy 293” flathead underneath with 3 97’s on a straight linkage. The under hood temp can really get hot, surely sucking all this hot air into the engine can be no good for power?! However I’ve seen very few pics of lakes...

Just bringing up an old thread of mine. Ended up borrowing a few heads. None of the off the shelf heads fitted with my .430” lift cam and 1.72” valves. Ended up getting a pair of MCF heads from Gollers Hot Rods. Still had to work the chambers a bit which are now at 82cc. Spark plugs are in a...

I think I’ve sussed it. Just needed to go a bit deeper with the 30 degree first. One final question, how far do your valves normally sit above the deck height once set?

Good shout, I will check.

Hi all, thanks for the replies. As I stated in my original post, I understand that the valve isn’t perpendicular to the deck. I’m also using a cutting tool with a mandrel that fits in both the valve guide and lifter bore. As has been said in post 2, I could be using a cutting wheel slightly too...

Hi. I’m in the process of grinding my valve seats to set the lash as I have non adjustable lifters. Due to the fact the valves aren’t at 90 degrees to the deck, my cutting tool is creating a larger valve seat contact area towards the piston as it is obviously contacting this area first. Could...

So the general consensus is to forget the fourth port out of the heat riser and go with some homemade we’ll fitting dividers/baffles.

The block will have full cooling system. Racing is everything from drag racing, to hill climbs and sprints to high speed time trials at Pendine.

Hi Tim. I’ve got JWL’s book and like his divider. I’m just wondering which would be more beneficial, that or a fourth port.

Hi Ralph. If I was to do a fourth port I wouldn’t be dividing the centre into two. I’ll either fit a port divider/baffle OR a fourth port.