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.

 

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!

 

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.

 

thanks spanners39 thats what i expected. Those are great num. for a stock cubic in evo, she is a sleeper. And 21 years young evo forever

 

Cams, re bore, new machined heads, new high comp. pistons are not a bolt on!

 

I think he meant that after your parts are installed "bolted on" it should be jetted and timed.

 

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.

 

A 2-1 exhaust will give some off-idle torque and 2-3 HP increase...The 2-1 has a scavenging effect on removing the exhaust gases during the exhaust stroke. You can find used 2-1's on Ebay for a good price all day long!

 

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.

 

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.