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

nhramnl · 11-01-2018, 06:59 AM

Quote:

Originally Posted by GTX JOHN

I found 3 to 4 hundreds without any other changes

But don't get your heart broke if you don't see anything. Some combinations "like" them and others don't. For the money and hassle though (both of which are minimal) they're worth a try.

Alan Roehrich · 11-01-2018, 09:15 AM

Larry Meaux.PipeMax. Best money you'll ever spend, if you're buying expensive headers and collectors because you're serious about power.

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!

Dwight Southerland · 11-02-2018, 11:26 AM

Quote:

Originally Posted by Alan Roehrich

Larry Meaux.PipeMax. Best money you'll ever spend, if you're buying expensive headers and collectors because you're serious about power.

X2!

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: 2,720 Likes: 2,768 Liked 2,429 Times in 688 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: 4,284 Likes: 2,337 Liked 3,126 Times in 962 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: 2,720 Likes: 2,768 Liked 2,429 Times in 688 Posts	Re: Trying Merge Collectors I found 3 to 4 hundreds without any other changes __________________ John Irving 741 Stock 741 Super Stock

11-01-2018, 09:15 AM	#8
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,095 Likes: 1,541 Liked 1,769 Times in 402 Posts	Re: Trying Merge Collectors Larry Meaux.PipeMax. Best money you'll ever spend, if you're buying expensive headers and collectors because you're serious about power. __________________ Alan Roehrich 212A G/S