im looking for a nice quality header and i heard about the bisi and saw its crazy design so was wondering what you guys think of it

 

bump for the late night crew

 

do a search, its been discussed before. If you look on Bisi's site you'll notice he quotes one of his responses from a time when he was questioned about the header and its design.

 

ya all the way, i loved mine.

 

yay

 

WE GOT ONE ON THE TRACK CAR AND CAN HONESTLY SAY WORTH EVERY PENNY

 

Ya alittle old of a post but it's worth the money--

 

Its a nice piece. nice merge collector, steps, long primaries. I love mine.

marcin.

 

I really liked the AN-R headers in the past but I heard they are extremely prone to cracking, and AN-R headers are made by the same guy as Bisi's aren't they? I'm not flaming the headers but I would like some input for my own benefit.

 

i belive ceramic coating them will help reduce cracking.

 

The cracking issues with the AN-R headers have been fixed.

They didn't crack due to bad fabrication, but from the use of tubing that was too thin. They have since moved to a thicker tubing, and the problem seems to be solved.

I haven't heard of any issues with the Bisi headers, so I wouldn't worry.

 

Another big factor is how the header is attached to the rest of the exhaust. I've seen some people do straight up flat flanges to their cat/exhaust. Obviously this provides no insurance when the engine rocks from torque. I have a 2.5 ID flex pipe (just as the turbo guys would use) on my Bisimoto header in place of the normal oem style spring/bolt/socket style connection (which would also work). Flexability is important.

For the other stories I've heard, with headers cracking even when running open header, thats just kinda IMO.

 

That sounds good, Bisi's and AN-R headers have IMO offered the best performance on the dollar

 

bisi's, an-r's are great, they give out good numbers at good prices, but i'd hate to be without AC, they dont clear AC which would suck if u had a hot chick with you driving around when its hot outside...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VsR785 &raquo;</TD></TR><TR><TD CLASS="quote">bisi's, an-r's are great, they give out good numbers at good prices, but i'd hate to be without AC, they dont clear AC which would suck if u had a hot chick with you driving around when its hot outside...</TD></TR></TABLE>

lol yeah but you'll be going faster and the wind thru her hair will arouse(spell?) her

from what i've read on here, both are very good headers, im sure you will be very happy with the power improvment!

 

ya get them its worth it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">The cracking issues with the AN-R headers have been fixed.

They didn't crack due to bad fabrication, but from the use of tubing that was too thin. They have since moved to a thicker tubing, and the problem seems to be solved.

I haven't heard of any issues with the Bisi headers, so I wouldn't worry.</TD></TR></TABLE>

I was just about to bring that up

 

http://www.bisimoto.com

and:
http://www.exospeed.com/engine/Bisimoto.htm

 

I like Bisi's merge collector better than AN-R's.

 

BISI

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rick Solis &raquo;</TD></TR><TR><TD CLASS="quote">

Burns Stainless </TD></TR></TABLE>

exactly.....much more efficient than the short merge collector on AN-R's header.

 

You get what you pay for ----

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RPM &raquo;</TD></TR><TR><TD CLASS="quote">

exactly.....much more efficient than the short merge collector on AN-R's header.</TD></TR></TABLE>

I retract my previous statement...

I was recently informed that Bisi's headers do not use an actual Burns stainless merge collector...

They are custom made collectors by Steve Brown, Just like the collectors on the AN-R/Prospeed/Ericks racing headers...

If I am wrong then correct me and I will delete this post...

 

http://www.an-r.com

http://www.bisimoto.com

maybe you should just ask direct ?? just a tought.

 

Just curious. For the people running the Bisi D-series header or I guess any for that matter. Where did you get yours from and how long did you wait?

I am assuming exospeed?