Cam regrind service near SoCal??

[Highside]

I'm thinking on having my cam reground on my near-stock 654.

I'm looking for a re-grind profile that can be used with stock springs.

I hear the original XS1 grind is a pretty good improvement over the stock (78) grind.

Does anyone know of a good regrind service in the SoCal area and if there's a better profile than the XS1??

 

[Jack]

The stock springs are garbage from the get go,not enough spring rate to control valve action with faster acting ramps,get the ones from Mikes XS. Cam choices for friendly street usage would be Shell#1, Web Cam 59A or the 256 cam(XS1). The Shell and Web cams are similar in duration and lift. Which ever one you choose to use,port the head first as this is the heart of the engine not the cams,it must breath first to produce power up top or bottom end,then if you feel a cam upgrade is in order then make that the next step.

 

[Highside]

The stock springs are garbage from the get go,not enough spring rate to control valve action with faster acting ramps,get the ones from Mikes XS. Cam choices for friendly street usage would be Shell#1, Web Cam 59A or the 256 cam(XS1). The Shell and Web cams are similar in duration and lift. Which ever one you choose to use,port the head first as this is the heart of the engine not the cams,it must breath first to produce power up top or bottom end,then if you feel a cam upgrade is in order then make that the next step.

I've heard that there's been quality control problems with both Shell and Web cams.

Is that a thing of the past, or is it still the case??

 

[Patches]

I've heard that there's been quality control problems with both Shell and Web cams.

Is that a thing of the past, or is it still the case??

I don't know much about the web, but I've never ran across anything in regards to quality control problems with the Shell. Everyone seems to love them. Also, there are several people doing the "shell cam". Basically they are doing the gring on the cam to Shell's specs, so it's going to be hard to say if someone that had a problem with a "shell cam" actually had a real one, or a grind done by someone else that was to those specs.

If you're worried about QC why not just go with the factory 256? Not quite the performance you may be looking for, but no QC issues, let's call it a happy medium. Personally I'm running a shell #1 from Hoos racing.

 

[Highside]

I don't know much about the web, but I've never ran across anything in regards to quality control problems with the Shell. Everyone seems to love them. Also, there are several people doing the "shell cam". Basically they are doing the gring on the cam to Shell's specs, so it's going to be hard to say if someone that had a problem with a "shell cam" actually had a real one, or a grind done by someone else that was to those specs.

If you're worried about QC why not just go with the factory 256? Not quite the performance you may be looking for, but no QC issues, let's call it a happy medium. Personally I'm running a shell #1 from Hoos racing.

I've read on other XS650 boards, that cams coming from Shell Racing (someone bought the company from Shell Thuet) were off by as much as 10 deg. Those posts were about 3 years old. Other people were reporting the same problem with Web Cams.

 

[Patches]

10 degrees?!?!?!? Holy shit. I don't know where Hoos racing (Gary) gets his, but myself and many others here on the board run his stuff and have had nothing but good luck. Not to mention he is a good guy to deal with, and knows a ton about the 650 motor.

 

[Highside]

10 degrees?!?!?!? Holy shit. I don't know where Hoos racing (Gary) gets his, but myself and many others here on the board run his stuff and have had nothing but good luck. Not to mention he is a good guy to deal with, and knows a ton about the 650 motor.

Do you have contact info for him??

Where is he located??

I'd prefer to deal with someone in this area.

 

[Patches]

Not local to you, but he comes highly recommended by myself and others here on the site.

http://www.hoosracing.com/

 

[scabber]

Well no matter who you buy the cam from buy the springs.

 

[Highside]

So, does anyone know of a cam that's a grind slightly larger than a Shell #1/Web 59A but smaller than a full blown 70 HP racing cam??

Everything that I've seen for sale seems to be either a street cam or full race cam with nothing in between.

I'm kinda wanting to build this engine in the 55-60 HP range.

 

[Patches]

I don't see why you couldn't build a 55-60 hp motor with the shell cam.

If you research much about the heads on these motors they do not benefit much with more valve lift beyond that of which the Shell #1 has to offer.

 

[Highside]

I don't see why you couldn't build a 55-60 hp motor with the shell cam.

I talked to the guys at Hoos Racing and they said that unless you do serious head work, have a big exhaust and carbs, you won't get much over 55 HP.

If you research much about the heads on these motors they do not benefit much with more valve lift beyond that of which the Shell #1 has to offer.

Then why does Web sell a racing cam with .475 lift??

 

[Patches]

I talked to the guys at Hoos Racing and they said that unless you do serious head work, have a big exhaust and carbs, you won't get much over 55 HP.

Isn't that what you are shooting for??? 55-60hp

Then why does Web sell a racing cam with .475 lift??

For highly modified heads I would guess.

The flow numbers for more lift have been posted before and the increase is very minimal....

55-60 can be done with bolt on parts. I have seen the dyno numbers to back up that statement.

 

[Highside]

Isn't that what you are shooting for??? 55-60hp




For highly modified heads I would guess.

The flow numbers for more lift have been posted before and the increase is very minimal....

55-60 can be done with bolt on parts. I have seen the dyno numbers to back up that statement.

Maybe the guy at Hoos Racing was just being conservative then.

 

[Patches]

Gary knows his shit. No doubt about that. I guess the question now is: what are your plans for the motor?

 

[Jack]

I talked to the guys at Hoos Racing and they said that unless you do serious head work, have a big exhaust and carbs, you won't get much over 55 HP.

Just minimal port clean-up on the intakes, and art work on the exhaust, tricked out valves,36mm flatslides, stepped headers, a shell #1 or megacycle 250-00, and 750 kit for sure get will you well get you in the ball park figure.




Then why does Web sell a racing cam with .475 lift??

These heads depending how you the lay out the port,valve size and work the short turn will allow the XS to flex it's muscle from .400+ LIFT . These higher lift cams allow you to take advantage of that flow capacity to maximize the engines power output. But also remember ,some of those higher lift cams have very aggressive ramps and will play havoc on those valve springs.

 

[Highside]

I like that megacycle 250-00 grind, but Jesus tapdancing Christ!!! $289??

 

[Highside]

Gary knows his shit. No doubt about that. I guess the question now is: what are your plans for the motor?

I just want a ballsy 654cc street engine for my cafe bike.

I can do a fair amount of head porting myself, but untill I've seen a head ported by someone who has a lot of experience with this head, I don't want to get too crazy. I have a spare head I can experiment with, but I'd prefer not to destroy it in the process. After all, all that I'll probably accomplish is to figure out what's probably already being done.

There is one thing I'd like to try on a flow bench though, a 55 deg exhaust valve. That's what they use in Top Fuel Hemis. It works wonders in that Hemi, can't think of a reason why it wouldn't work in this one.

 

[Highside]

bump.

Does anyone know of a cam that's 1 step bigger than a Shell#1??

 

[Highside]

Does anyone know whay Gary at Hoos Racing, isn't answering his phone??