Adding Vance & Hines pipes and K&N filter

[jacob7071]

Hello all.  I've had my bone stock '97 for about a year now, and I'm tired of listening to the stock pipes.  So I ordered the Vance & Hines pipes and a K&N filter.  I called Dave Dodge and told him what I've got, and he sent me his jet kit with 4 shims (0.020") and 4 main jets (#105).  I assume this means 1 for each carburetor.

Then I read this thread

http://www.magnaownersoftexas.com/forums/index.php?topic=2119.0

and it looks like Lance suggests #110 mains with 1 additional shim, and Greg suggests 2 additional shims (with I can't tell which mains).

So I have a couple of questions.  Should I try to exchange the #105 mains for #110s and stick with 1 additional shim?  Or should I keep the #105s and try to get 4 more shims for a total of 3 on each carb?  Also, should I turn the screws 3 1/8 or 3 1/4 or 3 3/8 turns out?  Is there enough of a difference between those to even matter?  Can that be easily changed if I find that I want to go another 1/4 turn out or in?

Thanks in advance for your help.

[roboto65]

The 110s would be better and the shims can be gotten at Radio Shack just small washer assortment.
Make sure to adjust the pilot screws to about 3 turns out and you should be good to go !!

If you still have popping you can go up a size on the idle jet think I ran a 45.

[TLRam1]

Jacob,
Where are you located? Jetting will be different if you are at 8000 above sea level verses 500 in the DFW area.

All this depends on how picky you are and your style of riding.

First off, what you have will work but I would do 3 total shims. Sounds like you want to tweak it a little more though.

On my 97 I am liking the 3 shims, not so sure about the 108 Mains yet, seems like I lost some up top. Right now it will stay like it is until I run the 2 bikes together, I have someone who will do this but we have not had the time to do so. This is strange to me as I thought the 108's would be fine and 110's better and it still might be with a different bike and exhaust. The exhaust I am running and have ran on this bike, modified stock and Cobra Turnouts, do not breathe as well as the Vance & Hines straight through design. 

Before I tried the 108's I would conservatively tell you 108's are the way to go and you will probably end up at 110's if you are performance driven, now I will have to let you defer to what others have used and there response.

I have been up and down at the computer for about 2 hours now, so let's wrap this up.

With some reservations I would guess, 108's, add 2 shims for 3 total shims, pilots turned out 3 ¼ turns, pilots turned between 3 1/8 to 3 3/8's will not make a lot of difference. Going from stock setting to 3 plus will make a noticeable difference. It is not easy to adjust the pilot screws with the carbs on the bike, with the right tools you can do it. You did not ask about Pilot Jets so we will not get into that.

Again this depends on where you are located, add that bit of info in your signature line to help in the future.

[TLRam1]

BTW Welcome to MOOT!

I see my lengthy post Allen posted up while I was up and down.   

I may have some extra shims, think I am out or close to it though. Allen mentioned 45 pilots, from what I remember from him, Allen thought he should go down to 42's which are one size larger than stock. If you wanted to change pilots I think 42's would be the way to go but you would have to reduce your turns out on the pilots screws a little.

[dgc67]

Where are you located? Jetting will be different if you are at 8000 above sea level verses 500 in the DFW area.

This is a huge consideration.

Make sure to adjust the pilot screws to about 3 turns out and you should be good to go !!

If you still have popping you can go up a size on the idle jet think I ran a 45.

IMO it is better to go ahead and go up one size on the idle jets while you have the carbs off and apart anyway.  3 Turns out is almost all it will allow.  Just my 2 cents.

[jacob7071]

Jacob,
Where are you located? Jetting will be different if you are at 8000 above sea level verses 500 in the DFW area.

I guess that would help.  I'm in Houston.  The only time I get above sea level is on an overpass.

you will probably end up at 110's if you are performance driven

My brother's got a Gixxer 1000, so I would like to get as much out of the Magna as I can.  So now it sounds like I'd be better off exchanging the #105s for #110s.  I'm re-jetting the carbs this Saturday, so I don't think I'd have time to exchange with Dave Dodge or order #110s online.  Would the stealership have them for a reasonable price?  Also, what size are the stock idle jets?  I guess I could get #42 at the stealership as well.

Oh, and one more question, If I find that the #110 mains and #42 pilots are crazy expensive at the stealership, would I be okay keeping the #105s and stock pilots with 2 additional shims?

[roboto65]

Houston well give me a call if you need help I live in Conroe and have done a carb or two LOL I have shims also sorry do not have the jets though. PM sent with my number.

[TLRam1]

Ordering on line for small dollar items such as this will not be a large difference, 42 Pilots are more expensive IIRC and the Mains not so much. Call around, some may have 110's in stock, some might need to order.

If all else fails what you have will work.

Give Allen a call, he can offer assistance or advice, he's pretty new to carbs but he manages. 

[dgc67]

Give Allen a call, he can offer assistance or advice, he's pretty new to carbs but he manages.

And he can demonstrate how a Valk can wheelie.

[roboto65]

Also Ten Minute Tire Changes  It was cold I tell ya 

[jacob7071]

I bought a 2000 magna last year that found some gravel and ended up totalled.  But, the PO had the V&H pipes and a dynojet kit on it.  He gave me the remaining parts when he sold the bike, and I was looking through it last night and found some #108 main jets.  So I'll use those rather than spend more money on the #110s.  But I will get the #42 pilots.

So my setup will be #108 mains with 3 total shims, #42 pilots and turn pilot screws 3 turns out.  Now what about popping on decel?  My first bike did that, and I would like to avoid it if possible.  Is it the pilot screws that would affect the popping?  And if so, would turning it out more or in more reduce popping?

Also, the dynojet kit has different needles and a drill bit to drill through something.  Just to clarify, I'm not using the dynojet kit, just the main jets from it.  Will I need to modify any stock parts besides jets and shims?

Thanks for the help everyone.  Allen, I called a few minutes ago but got your voicemail.  I'll try to call you again tonight.

[LIMagna]

My 96 has V&H pipes with the stock filter.  I'm running 105 mains with 42 pilots and needles from the Factory Pro jet kit which, I believe, are similar to the DynoJet kit needles (they're adjustable so they don't require shimming ... you just move the clip around between the available slots on the end of the needle).  My needles are set to the recommended starting point (second slot from the top) and I had to turn the mixtures screws out to around 3 1/4 turns to pretty much completely eliminate the decel popping.  At 3 turns out I still had a little bit of popping but the last quarter turn did the trick.  I think you should be fine starting with what you suggest and see what that gets you. 

[Lurkin]

CAREFUL, my understanding is the the Dynojet 108s are not the same as the Kiehin 108s.  I thought that someone had posted a conversion table before, but maybe not....

[TLRam1]

CAREFUL, my understanding is the the Dynojet 108s are not the same as the Kiehin 108s.  I thought that someone had posted a conversion table before, but maybe not....

If that is the case I believe you are correct. I think they are posted on the Magna FAQ Section.

[TLRam1]

Posted on the Magna FAQ Section.
http://www.magnaownersoftexas.com/forums/index.php?topic=1917.0