S&S 106" and headwork
#1
S&S 106" and headwork
I'm trying to get my ducks in a row before I pull the motor out of my fxd so I have some questions and I'm looking for some opinions. First off I was set on the S&S 106" kit and now I see they have a 107" kit. From what I've learned, the 106" is no longer being produced and has been replaced with the 107". The 106" is still available through directcycleparts for a pretty reasonable price, am I losing out on much (besides obviously 1 cube) by going with the 106? Is it worth the $300 for the 107? I'm going to have the bottom end done by a local shop to me, RC Cycles, they are going to weld/ true the crank and do the timken. So my next question is cams.. I was thinking the s&s 585 easy start, but I'm undecided between gear or chain drive... I'm not 100% sold on the cams so any input is appreciated. I've done some research but there's so many cams out there you can read til your eyes bleed
Headwork: RC Cycles recommended for good power to send my heads to T-man performance in North Carolina. Has anybody worked with them? I haven't spoke to them yet but I seems like $900-$1000 is about par for the course for good headwork. Any other shops I should check out? Any opinions on Mackie?
I'm looking to get a reliable 115-120 horse out of this thing is that realistic? Also should I be looking to run a bigger throttle body? Do the heads need to be machined for that? I ride the bike pretty much year round and I commute to work on it almost every day and ride it pretty hard. Any input is appreciated, thank you
Headwork: RC Cycles recommended for good power to send my heads to T-man performance in North Carolina. Has anybody worked with them? I haven't spoke to them yet but I seems like $900-$1000 is about par for the course for good headwork. Any other shops I should check out? Any opinions on Mackie?
I'm looking to get a reliable 115-120 horse out of this thing is that realistic? Also should I be looking to run a bigger throttle body? Do the heads need to be machined for that? I ride the bike pretty much year round and I commute to work on it almost every day and ride it pretty hard. Any input is appreciated, thank you
#2
They switched to CP pistons for the 107 kit.
You can get 115hp from a 107 with the 585's. Just get the compression right.
There are a few places you could get headwork done to achieve your goal. Shop around.
If you're getting the crank done go gear drive. Not mandatory but I always liked the gear drive.
Dave Mackie is a great guy. He can do your heads up right.
I'd go with a 55mm TB.
You can get 115hp from a 107 with the 585's. Just get the compression right.
There are a few places you could get headwork done to achieve your goal. Shop around.
If you're getting the crank done go gear drive. Not mandatory but I always liked the gear drive.
Dave Mackie is a great guy. He can do your heads up right.
I'd go with a 55mm TB.
#4
All good info from Larry.
Target64's 107" went well north of 120 hp with those .585's, and a Wood 9F will push it up yet from there.
Back in the chopper days of Titan, AIM, Big Dog, Illusion, etc., we'd use a Wood 9B, or a 9F in those carbed 107"ers.
They came in with either Supertrapp's or Thunderheaders on them, and with our headwork, and carb mods, they'd most all pop low-mid 120's both hp and torque...........long before these message boards, and before EFI.
Scott
Target64's 107" went well north of 120 hp with those .585's, and a Wood 9F will push it up yet from there.
Back in the chopper days of Titan, AIM, Big Dog, Illusion, etc., we'd use a Wood 9B, or a 9F in those carbed 107"ers.
They came in with either Supertrapp's or Thunderheaders on them, and with our headwork, and carb mods, they'd most all pop low-mid 120's both hp and torque...........long before these message boards, and before EFI.
Scott
#6
Thank you for all the info guys I really appreciate it. I have a lot of phone calls to make. If I were to go with a 55mm tb would you recommend the hpi over the se? Do you think this 106 or 107 needs the bigger tb over porting the stock one? I obviously want the power out of this thing but I also want it to run well. If the $600 tb is worth it then I don't mind spending the extra money
#7
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#9
Edit: I see hpi has the 5.3 injectors, but the list two different part numbers
HPI-DINJ-1 for $285
HPI-LMINJ-1 for $180
They don't describe the difference between the two
Last edited by monster715; 11-11-2014 at 02:16 PM.