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Manifolds: Things to Look for/When to replace
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TOPIC: Manifolds: Things to Look for/When to replace
#324216
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Re:Manifolds: Things to Look for/When to replace 7 Years, 3 Months ago  
I think you guys cursed me, all this talk about manifolds and sure enough, mine started leaking. I went ahead and purchased a ported one and had it installed... Boy is there ever a difference! Runs like a new bike, idle's great, and pulls like it's going out of style.
 
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#324220
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Re:Manifolds: Things to Look for/When to replace 7 Years, 3 Months ago  
NICKHEAD

what was your method for sealing? Standard OEM o-ring,any sealant?
 
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#324222
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Re:Manifolds: Things to Look for/When to replace 7 Years, 3 Months ago  
out of all the mods i have done so far,porting the intake was by far the best one..my bike pulls like a freight train.. if you surface the flanges the way Curt explains it you should have no trouble with them sealing..i used the same o-rings after i cleaned them with mild dish soap.. i just tighten the bolts slowly and cross-tighten so the flanges sit flat.. a little at a time..
 
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Re:Manifolds: Things to Look for/When to replace 6 Years, 5 Months ago  
Thanks for the education, Gram!

And thanks to everyone else who chimed in with their experiences. I'll be changing mine in the next few days.

 
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#536020
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Re:Manifolds: Things to Look for/When to replace 5 Years, 6 Months ago  
nightstar57 wrote:
I just ported mine and it looked great but its only an 07..i dont think the porting will weaken the manifold much,if any..but who knows..thanks Gram for a great article..when i tear down my girl's 05 roadie i will be looking for cracks on the intake. I wonder why no one has made a cast aluminum intake for these bikes..i know the rubber flexes and is cheaper for Yami to produce but someone like Barons might have offered an aluminum one instead..they work on car engines why not a v-twin.. The flange surfaces on the stock intake are crappy,at best..how much worse would the aluminum be..?? and koolau,finding someone to inspect between the jugs should be ah.. um.. well,good luck,i wouldn't know anything about that..

There has to be some rubber in there because the two cylinders vibrate independent from one another, and a solid intake would either break off of one of the heads or the whole thing would break itself apart. The rubber acts as a dampener between the cylinders and the carb.
 
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#536047
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Re:Manifolds: Things to Look for/When to replace 5 Years, 6 Months ago  
Assocracer wrote:
nightstar57 wrote:
I just ported mine and it looked great but its only an 07..i dont think the porting will weaken the manifold much,if any..but who knows..thanks Gram for a great article..when i tear down my girl's 05 roadie i will be looking for cracks on the intake. I wonder why no one has made a cast aluminum intake for these bikes..i know the rubber flexes and is cheaper for Yami to produce but someone like Barons might have offered an aluminum one instead..they work on car engines why not a v-twin.. The flange surfaces on the stock intake are crappy,at best..how much worse would the aluminum be..?? and koolau,finding someone to inspect between the jugs should be ah.. um.. well,good luck,i wouldn't know anything about that..

There has to be some rubber in there because the two cylinders vibrate independent from one another, and a solid intake would either break off of one of the heads or the whole thing would break itself apart. The rubber acts as a dampener between the cylinders and the carb.


If that were the case, my cast aluminum manifold should have gone bad a while ago. Been on bike 6yrs. There are also some machined aluminum manifolds around too. Both companies out of business, but not because of design or material.
 
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#547634
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Re:Manifolds: Things to Look for/When to replace 5 Years, 4 Months ago  
Just looking for opinion here. My first mods are being done to my 05' R* with 1 mile under 10K. I am having the 31 tooth pulley and the ported barons manifold put on plus replacing the primary seal(it's leaking and not due to the "normal" issues.) The rest of the bike is stock. My question is, is the manifold a good idea right now before exhaust and air kit is installed? Those two things have to wait. $$ is tight. Oh and AIS block off is being installed. Bike seems to be choking/held back during operation and start up. DrR* is looking at for me right now.
 
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#547640
Curt (Moderator)
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Re:Manifolds: Things to Look for/When to replace 5 Years, 4 Months ago  
No point in doing the manifold now if you have stock air box and pipes.
 
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#548520
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Re:Manifolds: Things to Look for/When to replace 5 Years, 4 Months ago  
Hi Curt!,

Well I did it anyways. Works fine and makes a huge difference. Runs much smoother.
I am picking up a set of longshots today and carb kit is on order.
Do you have any suggestions on a tach under $100?
 
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#548526
Curt (Moderator)
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Re:Manifolds: Things to Look for/When to replace 5 Years, 4 Months ago  
All tach are made by the same company in China, the only difference is some vendor have a special face plate put on them with the vendors name. They charge more for them because they have their name on them. I have used these (yi tin) brand and they work fine. I see Baron has gone up on their price from $59 to $69. You can make your own mounting bracket out of sheet SS for it just the way it is.

White

Black
 
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