Header flanges? (Now ready for Sale!!!)

[geoffinbc]

The verticle spacing for the bolts are different on the older generations unfortunately. I found this out the hard way...

I was unaware of this. I was lead to believe that the spacing was the same. Well, screw the genII. Everybody know its dieing out. :P

-Jospeh

Only the Gen1 heads had a different bolt spacing. Gen2 and Gen3 are the same.

Acording to the pics above they are clearly different. No matter however I will be making all generations eventually.

[FallenZ24]

I just measured the exhaust ports on my 3100. A properly centered 1.5in hole would fit over the port just fine. If centered around the port, there would be about a .25in overlap. Just thought i'd let you know. It might be better to make them 1.5in instead of 1.625in. That way you can use either size tubing.

-Joseph

[gboogie99]

somebody just pm me when they are ready for sale. Like I said earlier $40 shipped

[RacerX11]

I just measured the exhaust ports on my 3100. A properly centered 1.5in hole would fit over the port just fine.

Did you assume 1-1/2" OD for the tube, or ID? 1-1/2" 16ga exhaust tubing is 1.5" OD, but has an ID of ~1.37" (1-3/8"). How does a 1-3/8" hole line up with the port? 1-5/8" 16ga exhaust tubing is close to 1.5" ID. You want the ID of the exhaust tube to be slightly larger than the exhuast port to help reduce reversion. I don't think 1-1/2" exhaust pipe will be large enough.

Brad, did you draw up any ports with 1-1/2" ID pipe?

Marty

[geoffinbc]

No they were D shaped. I think it should be revised to use a 1 5/8" OD tubing. Then you can put the tubing inside the hole in the header fange and use a fillet weld to seal it up.

Whe Brad revises it I will cut them.

[Guest]

I used 1.5" tubing for mine, and have seen no issues. I actually had to stretch the 1.5" slightly to meet with the corners of the D.

Ok, I'm going to ask now, before any more happens.....

Are the port openings going to be round or D-shaped?The reason I ask is because if they are going to be round, I'm out. I want/need the D-shape in them.

[bszopi]

The current way they are drawn is with a 1 5/8" OD D-shaped port.

[Guest]

The current way they are drawn is with a 1 5/8" OD D-shaped port.

Ok, so will the 1 5/8 tube fit in the openings or will the spae of the tube need to be changed to slide in?

[Guest]

The verticle spacing for the bolts are different on the older generations unfortunately. I found this out the hard way...

I was unaware of this. I was lead to believe that the spacing was the same. Well, screw the genII. Everybody know its dieing out. :P

-Jospeh

Only the Gen1 heads had a different bolt spacing. Gen2 and Gen3 are the same.

Acording to the pics above they are clearly different. No matter however I will be making all generations eventually.

Marty is correct, genII and III share the same exact bolt spacing.

GenI and II share port spacing

[bszopi]

The circumference of the port is within a couple thousandths of the circumference of a 1 5/8" tube. I'm sure the tolerances of the laser won't be that close though... Obviously, the tube will have to be formed to fit the port.

[FallenZ24]

The verticle spacing for the bolts are different on the older generations unfortunately. I found this out the hard way...

I was unaware of this. I was lead to believe that the spacing was the same. Well, screw the genII. Everybody know its dieing out. :P

-Jospeh

Only the Gen1 heads had a different bolt spacing. Gen2 and Gen3 are the same.

Acording to the pics above they are clearly different. No matter however I will be making all generations eventually.

Marty is correct, genII and III share the same exact bolt spacing.

GenI and II share port spacing

Thanks for clearing that up. I also fixed the quote so it reads correctly now.

The specs for the flanges sound good. What type of time frame are we to expect before these are ready for sale? I'd like to start my headers soon and the flanges are the main thing holding me up.

-Joseph

[SappySE107]

It would be best if the flange opening is a little bigger than the exhaust. Round hole preferred really as most of the flow is coming off the top rounded part anyway, not the bottom. I havent measured a port yet but there is no reason to make the flanges D shaped.

[asylummotorsports]

Ok so where and to whom do I send my money?
Thanx

[MidnightriderZ24]

im also interested in a set. let me know as soon as your done.

[Guest]

It would be best if the flange opening is a little bigger than the exhaust. Round hole preferred really as most of the flow is coming off the top rounded part anyway, not the bottom. I havent measured a port yet but there is no reason to make the flanges D shaped.

No not at all.

This coming from a guy that is keen on port matching.