1340 build
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Intermediate
Joined: Dec 2012
Posts: 30
Likes: 0
From: Newcastle, ME
1340 build
Can anyone answer some questions for me. I just joined the forum and had some questions on my new ride. I just got my 91 fxrs from the shop and had some work done to her. It has 1340cc evo with S&S super Stock Heads and 10:1 pistons, S&S super e carb, Headquarters HQ-28 cam, Heads ported and polished with 3 angle valve job and stainless valves and heavy duty springs, and ignition upgrade.
Does anyone have similar mods and if so how much HP and TQ can I expect? Thanks.
I was told around 80hp/90tq. I was hopeing for 100/100 but She goes great anyway.
Does anyone have similar mods and if so how much HP and TQ can I expect? Thanks.
I was told around 80hp/90tq. I was hopeing for 100/100 but She goes great anyway.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,897
From: Bedford UK
Did you have your bike dyno tuned at the shop? That is the only way to maximise performance and find out how much HP/TQ your bike gives. If you go to the Tech forum here and then the engine section there are a couple of threads about 100HP from an 80", also here. You need to do more than bolt stuff on!
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
80/90 would be a good result, I did one the same as yours but with an EV46 cam and it gave 76/78.
100HP from an Evo is an expensive task, most people who claim 100HP and are not bankrupt as a result are full of it.
For example, I did a 103 SE Twin Cam with hoary great cams, 58mm throttle body and special heads and that only just made 100HP on the Dyno.
100HP from an Evo is an expensive task, most people who claim 100HP and are not bankrupt as a result are full of it.
For example, I did a 103 SE Twin Cam with hoary great cams, 58mm throttle body and special heads and that only just made 100HP on the Dyno.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,897
From: Bedford UK
If you wanted 100/100 you should have coordinated that from the outset with your engine builder! You can't 'hope', you have to invest. It doesn't come easy, as the links I posted earlier indicate.
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Club Member
Joined: Feb 2008
Posts: 18,575
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From: Norfolk, VA
Can anyone answer some questions for me. I just joined the forum and had some questions on my new ride. I just got my 91 fxrs from the shop and had some work done to her. It has 1340cc evo with S&S super Stock Heads and 10:1 pistons, S&S super e carb, Headquarters HQ-28 cam, Heads ported and polished with 3 angle valve job and stainless valves and heavy duty springs, and ignition upgrade.
Does anyone have similar mods and if so how much HP and TQ can I expect? Thanks.
I was told around 80hp/90tq. I was hopeing for 100/100 but She goes great anyway.
Does anyone have similar mods and if so how much HP and TQ can I expect? Thanks.
I was told around 80hp/90tq. I was hopeing for 100/100 but She goes great anyway.
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Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,897
From: Bedford UK
My experience with a 2-into-1, on the same bike and dyno testing before and after, is that HP was the same, but low/mid range torque was around 15% better. In addition the bike runs much smoother and sweeter so is greatly improved.
Thread Starter
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Intermediate
Joined: Dec 2012
Posts: 30
Likes: 0
From: Newcastle, ME
Thanks for the info, I am going to have the bike dyno tuned. The dealer in Maine charges $150 Im just waiting for more miles to be put on the bike she is still not fully broken in. I don't want to wind it out quite yet. I have adjusted the carb and timing but the dyno will dial it in more efficently.