Engine MINI 1st Gen 2nd Gen 3rd Gen Most liked posts in thread: Talking Heads

My motor is putting out 268 270 ish HP on the Helix “Heartbreaker” Mustang dyno and my Tq is 200 as off right before the Dragon.

The Helix dyno has the heartbreaker name because everyone shows up saying my car should make 250-300 hp according to their butt dyno. The heartbreak comes when the car gets strapped down and the real numbers are determined. Also Mustang Dynos are a lot harder to fake real results on unlike a dyno-jets. Let’s leave it at that as I do t want to start a “which dyno is better thread” .

My motor has just about 104,000 miles but I beat on it and also baby it with maintenance and frequent oil changes with Motul or Amsoil every 3000 miles. As you know I run 100% VP M-1 Meth all the time and I am tuneed for it, so while I am making great power the oil needs to be changed more often because with <with the oil get dirty faster and breaks down quicker.

I think my next motor mod may be pistons, rods and top seal gap-less rings to seal and eliminate blow-by which robs our cars of power and TQ.

Then again if my leak down test is still good I may just add a TVS-900 and get away from the less efficient heat pomp M45 SC.

 

Just an FYI - Jan and many other vendors that make custom parts do not provide Cam Cards with the custom cams because anyone could copy and duplicate the product they put so much R&D into.

 

Also to maximize any cam or custom head the block / motor pistons need to be sealed. The biggest problem on any factory car is blow-by.

A very good leakdown test should be run on higher mileage motors first before updating the head as most of our cars including mine could benefit from new / upgraded piston rings.


http://015ef8d.netsolhost.com/TechPage.aspx#trGaplessPistRings

 

I agree about the cam card but most people have no idea what the info on the card even means. I think you are right about Newman available is the US now, but I do not think they can sell the RMW spec cams just the standard Newman cams they have available.

 

It’s funny that you bring that up.

The running joke about some manufacturers Cams is make sure you “Ding theTubes” so the cam will fit.

Hahahahaha

 

Whaaaaat ? I would have called JAN and sent the CAM back. That should not happen ever with any cam.

I had the RMW street cam for years and it fit fine. Then because I wanted more power I upgraded lots of stuff again and skipped the dominator and move up to the Grand AM Cam and it fit fine without any issues.

 

Yup and my RMW Head looks the same and it is port matched perfectly to my RMW header.

 

Is it just me or does something look strange about the ported head. The bolt holes do not line up and the ports themselves are uneven. Is it just the picture. I have never seen a head and gasket in person though so that is why I'm asking.

 

Since this is an educational thread on heads, I'm still wondering if an (imaginary) RMW CNC'd head with stock valves would be better for lower end torque than a finished RMW head with big valves. Is valve size and port shape/size somewhat independent of each other? Curious as I only have an auto now and can't take full advantage of larger valves at high RPM's.

What made me wonder was an incomplete big valve Cosworth head with CNC'd ports, but stock valves that was recently for sale, and looking into the possibility of ordering a custom head from Jan with the CNC port work alone (at full price in case anyone thinks it's only a cost cutting issue).

 

That’s the Thumper magic! The first two are with the OEM gasket, the ported head has an aftermarket gasket. You cannot make a good comparison. He also ports by hand, so you get unevenness and no two are the same.

 

That's my point...

 

Just watching this all unfold.......... again