The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > Frame Mount EVO Sportster Talk (1986-2003 models)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Active Threads
0 New Brake Light Wiring Issues
Last Post: IXL2Relax
Posted On: 32 Minutes Ago
Replies: 2
Views: 48
0 Keep & Kill
Last Post: Crusty
Posted On: 37 Minutes Ago
Replies: 30,795
Views: 1,804,445
0 Vapor Lock and the Super E
Last Post: Jeff
Posted On: 47 Minutes Ago
Replies: 9
Views: 238
0 KT - 2022 - Show A Little Backbone
Last Post: IXL2Relax
Posted On: 57 Minutes Ago
Replies: 47
Views: 7,692
0 Blown Lights, WHY?
Last Post: Ferrous Head
Posted On: 1 Hour Ago
Replies: 18
Views: 480
0 2 capacitor questions
Last Post: IronHeadRon
Posted On: 2 Hours Ago
Replies: 4
Views: 93
0 Not sure what to do next
Last Post: Hippysmack
Posted On: 2 Hours Ago
Replies: 156
Views: 13,595
0 1979 1000xlh front drive (chain) sprocket tourque
Last Post: Hardtail28
Posted On: 2 Hours Ago
Replies: 12
Views: 388
0 winding idle up excessively to start bike.
Last Post: 73HEAD
Posted On: 2 Hours Ago
Replies: 64
Views: 3,026
0 Rebuilding and Tuning a S&S GBL carburetor
Last Post: CHOPTOP37
Posted On: 2 Hours Ago
Replies: 74
Views: 3,170
0 Allegheny National Park III
Last Post: BKB
Posted On: 2 Hours Ago
Replies: 271
Views: 32,994
0 how many run baffles, run open, or just run stock
Last Post: Stray Cat
Posted On: 2 Hours Ago
Replies: 416
Views: 104,597
0 Ironhead and Owner - Post Yer Pics If You dare!
Last Post: backintoxls
Posted On: 3 Hours Ago
Replies: 213
Views: 65,067
0 Review: Mustang Solo Touring Saddle for 2004+ Sportsters
Last Post: sportsterpaul
Posted On: 3 Hours Ago
Replies: 1
Views: 30
0 Iree's late night cafe
Last Post: Stairman
Posted On: 6 Hours Ago
Replies: 2,352
Views: 461,894
0 trock transmission door
Last Post: SHAKY DAVE
Posted On: 6 Hours Ago
Replies: 4
Views: 230
0 Hello
Last Post: XL Ed
Posted On: 6 Hours Ago
Replies: 6
Views: 51
0 Birthday wishes to our resident Asgardian!
Last Post: wedge
Posted On: 8 Hours Ago
Replies: 8
Views: 120
0 Current projects (2 of them anyway)
Last Post: brucstoudt
Posted On: 8 Hours Ago
Replies: 72
Views: 5,993
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 8 Hours Ago
Replies: 38,753
Views: 4,970,487
0 My 2001 off-road Sportster 1200
Last Post: wedge
Posted On: 8 Hours Ago
Replies: 11
Views: 741
0 Reroute oil lines on my 1991?
Last Post: John Harper
Posted On: 9 Hours Ago
Replies: 6
Views: 133
0 cancer
Last Post: sportsterpaul
Posted On: 10 Hours Ago
Replies: 608
Views: 76,326
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Stairman
Posted On: 10 Hours Ago
Replies: 55,208
Views: 9,438,702
0 What's Wrong With My Bike
Last Post: PoodlePunche
Posted On: 10 Hours Ago
Replies: 83
Views: 4,234
0 Carb upkeep:
Last Post: sportsterpaul
Posted On: 10 Hours Ago
Replies: 2
Views: 232
0 Upside Down Monoshock IH - A Longterm Project
Last Post: paulc
Posted On: 12 Hours Ago
Replies: 384
Views: 87,860
0 oil dripping fom carb
Last Post: Iron Mike
Posted On: 14 Hours Ago
Replies: 5
Views: 327
0 What makes a Hugger a Hugger?
Last Post: Iron Mike
Posted On: 14 Hours Ago
Replies: 25
Views: 2,550
5 Are you married or single???
Last Post: IronHeadRon
Posted On: 14 Hours Ago
Replies: 540
Views: 80,504
More...
Members Birthdays
Reply
 
Share Thread Tools Display Modes
  #21  
Old 10th July 2022
DrMotorcycle DrMotorcycle is offline
Biker
 
Join Date: Apr 2022
Posts: 29
Sportster/Buell Model: Sportster
Sportster/Buell Year: 1994
Reputation: 132263
DrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant future
Default



Revision 4 is done and the bike is up and running again.

A lot of thought went into this; I spent a lot of time reading comments and getting feedback from damn near every corner of the internet, from forums, Facebook, YouTube etc. I knew based off what I read that people didn't like the fact that the air filter was so close to the rider, so the first order of business was to move the setup forward. Additionally, I wanted to at minimum double the plenum volume, while also making sure that the intake ports are still the lowest part of the Coldside, which was tricky.

Not wanting to introduce a bunch of additional bends into the system, I decided to rotate the compressor housing 90*, so it now faces the ground. This allowed me to increase the length of the pipe leading to the compressor housing by 8". The plenum volume has gone from 200cc to 800cc. I switched to a Sifton intake manifold which also has noticeably more volume on the inside than the stocker (probably about 100cc, just a guess through).

As far as driveability goes; On Revision 3, the previous setup, there was a leak at the connection between the turbo/coldside pipe, and it was large enough that it would drip a drop of gas every now and then. Knowing that I was going to change the setup anyway, I just put a richer pilot jet in the bike until I could get around to fixing the leak. AFR's were high 15's low 16's during cruise, which is obviously too lean. I had to also open up the Thunderjet a full turn and a half to get the AFR's at WOT back down to 11.2-11.4.

I figured that it was the only leak, but I was wrong. As I was pulling off the old setup and prepping for Rev 4 fabrication, I pulled off the intake manifold and went to remove the hobbs switch (which was tapped/screwed into the intake manifold via NPT threads), and it wasn't even finger tight! It was literally 1/4 turn from just straight up flopping out. Solid mount vibrations strike again!

Here's the reason for me explaining this; you'd expect to see the AFR's at cruise come down considerably after fixing the vacuum leaks (they did, down to 13.8-14.2, 2 full points) in addition to having to back off the Thunderjet (main jet) the 1.5 turns that I made previously. However, at Wide open throttle and on only 6PSI, I had to OPEN the thunderjet another full turn. The jury is still out on how much power it picked up, but I will say that this is the strongest the bike has ever felt on this low of a boost setting, and that's while it's 110 degrees out!

Cold start seems to be the same, throttle response off idle has dulled slightly but as of right now I'm very happy with how this has come together. So much more legroom, more power, everything is really starting to come together now. Just need to add a small heatshield and here on out, Revision 4 is probably going to be the final revision. Test and Tune begins tomorrow, see you soon!

-Jimmy
Reply With Quote
  #22  
Old 4 Weeks Ago
cycowrencher's Avatar
cycowrencher cycowrencher is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2009
Location: Pepperell, MA
Posts: 2,878
Sportster/Buell Model: XLH 1200
Sportster/Buell Year: 2003
Other Motorcycle Model: 1984 KX 125
Reputation: 573519
cycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond reputecycowrencher has a reputation beyond repute
Default

Have you done a Dyno pull yet?


Sent from my Pixel 6 Pro using Tapatalk
__________________
USN 1991-1995 VFA-81/ USS Saratoga, Iraq 1, Kosovo/ Bosnia Conflict
Reply With Quote
  #23  
Old 4 Weeks Ago
DrMotorcycle DrMotorcycle is offline
Biker
 
Join Date: Apr 2022
Posts: 29
Sportster/Buell Model: Sportster
Sportster/Buell Year: 1994
Reputation: 132263
DrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant future
Default

Quote:
Originally Posted by cycowrencher View Post
Have you done a Dyno pull yet?


Sent from my Pixel 6 Pro using Tapatalk
Negative, still some changes I want to make before doing that. Also probably going to wait until it's not 110+ degrees here in Az as well, doesn't seem like the greatest time for dyno pulls, ya know?
Reply With Quote
  #24  
Old 4 Weeks Ago
DrMotorcycle DrMotorcycle is offline
Biker
 
Join Date: Apr 2022
Posts: 29
Sportster/Buell Model: Sportster
Sportster/Buell Year: 1994
Reputation: 132263
DrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant future
Default

Update - Bike is running pretty good now on 9PSI, it's just so scorching hot that it seems unwise to raise the boost any higher than it currently is. Also, during Rev 4 fabrication, my Argon tanks were getting low, meaning that I could either slightly modify the current header, or get both of my tanks filled and do it the way I really wanted to (primaries away from the intake pipe reducing heat, 2.25" collector instead of 1.75" collector). Decided to take the easy way out, now I'm regretting it. Looks like there's going to be a revision 5 after all.

Without sounding too much like I'm trying to pat myself on the back; I'm giving up a lot of $ here in terms of lost revenue to keep testing and improving. Between YouTube, Facebook and Instagram, I've Have had about a dozen people reach out that are in the "I'm ready to buy right now" camp that I've turned down, solely because I'm not yet satisfied with where it's at. Thought Rev 4 was going to do it, now I'm thinking Rev 5 is the Ticket.

See you soon
Reply With Quote
  #25  
Old 4 Weeks Ago
Medyo Bastos Medyo Bastos is offline
Greasemonkey
 
Join Date: Jul 2018
Posts: 123
Sportster/Buell Model: xlch
Sportster/Buell Year: 1966
Reputation: 59838
Medyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to behold
Default

your build looks great! Let me know if you’d be interested in fabricating pieces for a n early 900 ironhead. I have a b-25 and hsr-42 that should work.


Sent from my iPhone using Tapatalk
Reply With Quote
  #26  
Old 3 Weeks Ago
DrMotorcycle DrMotorcycle is offline
Biker
 
Join Date: Apr 2022
Posts: 29
Sportster/Buell Model: Sportster
Sportster/Buell Year: 1994
Reputation: 132263
DrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant future
Default

Quote:
Originally Posted by Medyo Bastos View Post
your build looks great! Let me know if you’d be interested in fabricating pieces for a n early 900 ironhead. I have a b-25 and hsr-42 that should work.


Sent from my iPhone using Tapatalk
PM sent.
Reply With Quote
  #27  
Old 3 Weeks Ago
DrMotorcycle DrMotorcycle is offline
Biker
 
Join Date: Apr 2022
Posts: 29
Sportster/Buell Model: Sportster
Sportster/Buell Year: 1994
Reputation: 132263
DrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant future
Default

Quote:
Originally Posted by Medyo Bastos View Post
your build looks great! Let me know if you’d be interested in fabricating pieces for a n early 900 ironhead. I have a b-25 and hsr-42 that should work.


Sent from my iPhone using Tapatalk
Your inbox is full, I can fabricate a setup for you if I have the bike in my home shop here in AZ.

-Jimmy
Reply With Quote
  #28  
Old 3 Weeks Ago
Medyo Bastos Medyo Bastos is offline
Greasemonkey
 
Join Date: Jul 2018
Posts: 123
Sportster/Buell Model: xlch
Sportster/Buell Year: 1966
Reputation: 59838
Medyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to beholdMedyo Bastos is a splendid one to behold
Default

im not sure why Tapatalk says my inbox is full. I literally have 3 messages in there. I’m not able to send you a message either


Sent from my iPhone using Tapatalk
Reply With Quote
  #29  
Old 3 Weeks Ago
IronHeadRon's Avatar
IronHeadRon IronHeadRon is offline
Master Mechanic
 
Join Date: Aug 2018
Location: Pacific NW
Posts: 287
Sportster/Buell Model: XLCH
Sportster/Buell Year: 1969
Other Motorcycle Model: Honda Shadow
Other Motorcycle Year: 1986
IronHeadRon has disabled reputation
Default

It's probably your sent messages, also conversations get collapsed. I'm guessing a premium membership solves it, otherwise email eachother or clean out all the box's (not just the inbox) if you wish to talk shop privately

Don't worry, I'll keep it on the low down your selling BLOW openly online. I just hope no one's bike overdoses (get my lame pun, huh huh, get it)
Reply With Quote
  #30  
Old 3 Weeks Ago
DrMotorcycle DrMotorcycle is offline
Biker
 
Join Date: Apr 2022
Posts: 29
Sportster/Buell Model: Sportster
Sportster/Buell Year: 1994
Reputation: 132263
DrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant futureDrMotorcycle has a brilliant future
Default

Quote:
Originally Posted by Medyo Bastos View Post
im not sure why Tapatalk says my inbox is full. I literally have 3 messages in there. I’m not able to send you a message either


Sent from my iPhone using Tapatalk
My e-mail is doctormotorcycle@hotmail.com
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 05:31.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC