Trying Merge Collectors

BA1927 · 10-31-2018, 11:22 AM

Is there a formula when going from conventional collector's to a merge in reference to shortening the primary tube by how much to start on a 1 5/8" x 33" on a 4-1 header low HP Low RPM V8 - Thank's in advance any input is appreciated

GTX JOHN · 10-31-2018, 12:23 PM

We do not change primary length.

BA1927 · 10-31-2018, 01:34 PM

Ok I have been told bye a reputable Header Mfg that they should be shortened to take full advantage of the collector and I just didn't know how much but thank you for the response - John DID YOU find an improvement and if so immediately or did you make other changes as well - Thanks Bob

jmcarter · 10-31-2018, 01:43 PM

I’d recommend calling Mark Lelchook of Performance Welding. Based on your combination and current header he can get you pretty close. Highly recommend buying the collectors from him, they are a pure work of art.

BA1927 · 10-31-2018, 02:27 PM

TY - I look him up

GTX JOHN · 11-01-2018, 12:53 AM

I found 3 to 4 hundreds without any other changes

340Cuda · 11-01-2018, 01:25 PM

Quote:

Originally Posted by jmcarter

I’d recommend calling Mark Lelchook of Performance Welding. Based on your combination and current header he can get you pretty close. Highly recommend buying the collectors from him, they are a pure work of art.

I wanted to put mine on the a coffee table rather than the race car. Great work!

rod butcher · 11-02-2018, 11:46 AM

Quote:

Originally Posted by jmcarter

I’d recommend calling Mark Lelchook of Performance Welding. Based on your combination and current header he can get you pretty close. Highly recommend buying the collectors from him, they are a pure work of art.

Just look @ Indy's qualifying sheet the past few years. Performance Welding gets it done.
Nuff said.

Rod

10-31-2018, 11:22 AM	#1
BA1927 Member Join Date: Nov 2003 Location: BOSTON Posts: 151 Likes: 24 Liked 25 Times in 9 Posts	Trying Merge Collectors Is there a formula when going from conventional collector's to a merge in reference to shortening the primary tube by how much to start on a 1 5/8" x 33" on a 4-1 header low HP Low RPM V8 - Thank's in advance any input is appreciated

10-31-2018, 12:23 PM	#2
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,721 Likes: 2,772 Liked 2,438 Times in 689 Posts	Re: Trying Merge Collectors We do not change primary length. __________________ John Irving 741 Stock 741 Super Stock

10-31-2018, 01:34 PM	#3
BA1927 Member Join Date: Nov 2003 Location: BOSTON Posts: 151 Likes: 24 Liked 25 Times in 9 Posts	Re: Trying Merge Collectors Ok I have been told bye a reputable Header Mfg that they should be shortened to take full advantage of the collector and I just didn't know how much but thank you for the response - John DID YOU find an improvement and if so immediately or did you make other changes as well - Thanks Bob

10-31-2018, 01:43 PM	#4
jmcarter VIP Member Join Date: Dec 2008 Location: Richmond Hill GA (and Port Ludlow WA) Posts: 4,286 Likes: 2,342 Liked 3,146 Times in 963 Posts	Re: Trying Merge Collectors I’d recommend calling Mark Lelchook of Performance Welding. Based on your combination and current header he can get you pretty close. Highly recommend buying the collectors from him, they are a pure work of art. __________________ Jim Carter 2340 Super Stock 2340 SST/2340 Stock Set another place at the table

10-31-2018, 02:27 PM	#5
BA1927 Member Join Date: Nov 2003 Location: BOSTON Posts: 151 Likes: 24 Liked 25 Times in 9 Posts	Re: Trying Merge Collectors TY - I look him up

11-01-2018, 12:53 AM	#6
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,721 Likes: 2,772 Liked 2,438 Times in 689 Posts	Re: Trying Merge Collectors I found 3 to 4 hundreds without any other changes __________________ John Irving 741 Stock 741 Super Stock