Expansion Chamber on Rat Rod

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Gareth

New Member
Dec 8, 2009
123
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Floriduh
That is a really long head pipe. I like the aesthetics, but cannot help but think the power pulse timing would be far from optimized. Where did it move your power band to? Nice work regardless.
 
CoastalCruiser

CoastalCruiser

New Member
Apr 28, 2010
338
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Spaced Coast
I can't help but agree with Gareth. your header pipe is way too long.

Lengthening the header has the effect of increasing mid-range power at the expense of a drop in maximum hp. This is a direct quote from info I've discovered online.


:-||
 
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john_the_great

john_the_great

New Member
Oct 24, 2009
191
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California
That header pipe looks shorter the the SBP expansion chamber, so it should work fine. I really like the way that exhaust looks I'm prolly gonna try to duplicate it
 
timboellner

timboellner

Member
Apr 1, 2009
435
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16
Towson Maryland
That is one cool looking bike. I like everything about it .
I don't think or say that very often.
Nice job!
Please tell us that you are gonna put some decent brakes on it.
I don't see any and that scares me from my riding experience.
Coaster brakes won't do it.
That triple tree front end is something I've always wanted and the tank is fantastic.
I'm betting that a nice silencer is in your future. I have neighbors too.
again, nice job and watch that chain tension also.
Tim aka A/C man
 
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culvercityclassic

Well-Known Member
Sep 27, 2009
3,115
177
63
Culver City, Ca
Thanks Tim. I did make a very cool silencer and will post some new pics soon. You are right about the brakes as the bike does a true 40. I have been lucky so far. I see we are in the same trade hvac that's cool. Check back for new pictures
 
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culvercityclassic

Well-Known Member
Sep 27, 2009
3,115
177
63
Culver City, Ca
Hey ChuCheen,

The latest modifications since the last ride: new roller cam, roller rockers, ported head, high compression piston and 3:73 gears. Now I need some brakes...lol

JK its still the same see you on the next ride and I will make sure you get your "In N Out"
 
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culvercityclassic

Well-Known Member
Sep 27, 2009
3,115
177
63
Culver City, Ca
The pipe has been completed for a while and works well as my co-riders noticed. It has the option of un-screwing the silencer off with your hands for the un-corked option. It does have a noticeable power difference with no silencer. This little feature is nice and will be put on all my exhaust from now on. With this option you are able to tune this pipe by the length of the silencer "A Quick Swap"
 

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