WebCam cams for FJ/XJR

[somatristac]

Hello guys,

does anyone have experience with WebCam camshafts grind 225. and 540. for FJ1100/1200 engines?

I own a European XJR 1300(1250) and would like to buy a pair of performance camshafts, but would like to know which grind would you recommend?

What's the torque/hp curve with one grind compared to the other? and also rev range...

Would grind 540 drop in a stock 1250 engine with rising compression ration and some true port and polishing job?

Thanks

[somatristac]

to be more precise, I'm looking for camshafts that are similar to the old Yoshimura cams which unfortunately are not made any more

http://shop.yoshimura-jp.com/en/product/syousai.php?id=915

they were a straight drop in to the 1250, and make great torque and horsepower, my club mates scored as much as 150hp on the crank(dyoned) with full 4in1 exhaust, dynojet 3 carb kit and separate pod filters without any head job done.

With Yoshimura Mikuni TMR-MJN  flatslides (or just plain Mikuni TMR-D16) or Keihin FCR 39's horsepower numbers are much better

[Pat Conlon]

Randy and Chris are the go to guys on this. Beware MegaCycle cams, several folks have commented about pitting.

Chris (fj1289) mentioned Kent Cams in the UK : http://www.fjowners.com/index.php?topic=7826.msg71151#msg71151

Stay tuned, others will chime in...

[somatristac]

thanks Pat

i've heard about problems with Megacycle cams

I do know about Kent cams in UK and their YAM7 Fj/xjr grind,  but the problem with their reground camshafts is a smaller base circle and to set them up properly custom bigger shims are needed, which are outside the standard yamaha available shim range

that's why I'm looking for another solution and especially at WebCam cams

[Pat Conlon]

Ok, good to know...thx.

[racerrad8]

Hello guys,

does anyone have experience with WebCam camshafts grind 225. and 540. for FJ1100/1200 engines?

I own a European XJR 1300(1250) and would like to buy a pair of performance camshafts, but would like to know which grind would you recommend?

What's the torque/hp curve with one grind compared to the other? and also rev range...

Would grind 540 drop in a stock 1250 engine with rising compression ration and some true port and polishing job?

Thanks

I have installed a few different grinds from Web Cam; one was the 225 and the others were custom grinds. I am happy with the custom grind we installed into Wizard. I just had a look at them a few weeks ago and they are wearing beautiful.

I wanted to ask just a few questions about your XJR. I see you posted the picture below and by the bluing of the header at the head I would say it is really lean at the time of that photo.


I cannot tell from the photos and I have a couple of questions;

Are you still running the stock air box?
Have the intake manifold be changed over to 36Y's?
Has there been any work done to the carbs?
   If so, can you advise on which needle is installed and the current jetting?

Randy - RPM

[somatristac]

Hello guys,

does anyone have experience with WebCam camshafts grind 225. and 540. for FJ1100/1200 engines?

I own a European XJR 1300(1250) and would like to buy a pair of performance camshafts, but would like to know which grind would you recommend?

What's the torque/hp curve with one grind compared to the other? and also rev range...

Would grind 540 drop in a stock 1250 engine with rising compression ration and some true port and polishing job?

Thanks

I have installed a few different grinds from Web Cam; one was the 225 and the others were custom grinds. I am happy with the custom grind we installed into Wizard. I just had a look at them a few weeks ago and they are wearing beautiful.

I wanted to ask just a few questions about your XJR. I see you posted the picture below and by the bluing of the header at the head I would say it is really lean at the time of that photo.


I cannot tell from the photos and I have a couple of questions;

Are you still running the stock air box?
Have the intake manifold be changed over to 36Y's?
Has there been any work done to the carbs?
  If so, can you advise on which needle is installed and the current jetting?

Randy - RPM

Hi Randy,

So , how was the feeling with the 225. grind compared to the stock FJ cams?

About my bike:

I have titanium headers, so I think that color gradation due to heat could be a little different then on stainless headers, or am I wrong?

I have 36Y inlets, stock airbox with modified intake cover.

Carbs are adjusted, all mixture screws 1.5x out, main jet is genuine Mikuni 117.5 and all other jets are stock.I didn't shim the needle.

Other jetting should be as follows from the user manual:

main jet needle: 5D96-2
needle jet: Y-2
air jet : 45
pilot jet: 40
valve seat: 2.3
starter jet: 32.5

Bike was dynoed, and it has 131hp on the crankshaft compared to stock 98.

[JMR]

 I run the Web 540 grind. Engine is 1314cc (Wiseco) with head work, FCR 39 etc. I had to flycut the valve reliefs for oversize valves (increase the relief ID) and add some depth for those cams. I would think the stock pistons would need some work to use those cams. You would definitely need springs.
Web, in general, really cuts the base circle so you will have to increase the shim thickness....like 4 shim sizes at least.
I ran Yoshimura cams in the stock displacement engine for years. They worked well with 105 lobe centers. I got about 135 HP (if I remember correctly) using a Hindle exhaust and RS38's. I run Yoshimura cams in my Hayabusa.....I didn't have to change a shim after installation. I have liked Yoshimuria products for 35 years.
I do a lot business with Megacycle especially with rocker arm hard welding....I have not had problems. Same with their hard weld cams for the SOHC CB750 and 550. I have sent well over 75 cams to them for work. A recent set of FZR400 cams I sent to them look very good....we'll see how the are after a season of road racing. The work is expensive.
About 12 years ago or so people were having a lot of problems with Web hard welds on Hayabusa'a....erosion, pitting etc. Also the the problem with really cutting into the base circle.
My point is I have no idea how the cams were used, what oil was used and was it changed enough, what springs were used and what was the seat pressure etc etc. A lot of variables are at work so I take everything with a grain of salt .
And yes....the Ti pipes pipes color up different from stainless. And one brand of Ti pipe will color differently from another. Put the bike on a dyno and get an accurate A/F or run a wideband on it
BTW....there is another cam company that welds cams for bikes in the USA....Delta cam. I have worked with them in the past for custom work.

[somatristac]

JMR,

thanks very much for a detailed writeup .

This is good to know, cause I thought that WebCam welds up the lobes, and then regrinds them to a stock base circle.

So it's almost the same, like with Kent cams, only WebCam has more profiles to choose from.

[aviationfred]

I don't know if these would be a direct drop in or not.

For sale on eBay right now..... http://www.ebay.com/itm/291694981476?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT#shpCntId



Fred

[Pat Conlon]

What is the Webcam 194/556 grind?

[simi_ed]

I asked the seller about a month ago.  He had no clue.  Nothing on webcam's site either.  I hope webcam could offer some specs, but I wasn't motivated enough to pursue it ...

[somatristac]

I have sent WebCam a question regarding these cams from Ebay, will see what they say

[somatristac]

What is the Webcam 194/556 grind?

I got a fast answer from WebCam today

The lift is .350 on intake and exhaust. The duration @.050 is 238 on the intake, and 232 in the exhaust. Recommended lobe center is 104 intake 106 exhaust, valve lash .006-.008 on the intake, .008-.010 on the exhaust

Don't know why it has so little duration on the exhaust cam?

[fj1289]

FFS - this message s the third time Ive typed this

You can Google web camshafts and grind 194 and 556 -- 194 is CBR1100XX intake and 556 is SV650 exhaust. And those lobes will have the same lift and duration numbers no matter which blank they are ground on.

Most modern bikes run shorter duration cams on the exhaust than intake.   Then again,  a budget upgrade for Busa's are to install a stock intake cam on the exhaust side... so who knows what works best for FJ engines?  Who wants to do the dyno work and let us all know?!

Maybe the shorter exhaust duration helps the torque curve for the cars?  

Although the intake matches the 225 grind lift and lift at .050, but the 225 grind has a larger "advertised" duration -- which means the 225 grind will have less abrupt ramps and should be easier on the valve train and more suitable for daily street use without requiring as frequent valve adjustments.