Dunno about the Cams Specs.
Just measered they wont fit OEM Spring/retainer Setup.
And - to say it again:
You should be able to rev up to 11300.
High Comp Pistons are a must anyway.
...and your Bike should already be comparatively light.
Dunno about the Cams Specs.
Just measered they wont fit OEM Spring/retainer Setup.
And - to say it again:
You should be able to rev up to 11300.
High Comp Pistons are a must anyway.
...and your Bike should already be comparatively light.
Otherwise new Cams will get you nowhere.
You should be able to rev up to 11300. - check
High Comp Pistons are a must anyway. - check
...and your Bike should already be comparatively light. - check
Dale so whats the recommended spring and retainer setup here???
I'd like to source these out as soon as possible
I am in the process of trying to source springs and retainers,should hear back soon.
I previously used HRC parts.The retainers are hard anodised aluminium.
Dale
__________________
Old enough to know better...most of the time
1988 RC30 track condition FOR SALE
2005 999R yippee!!!
2009 Harley Electra Glide
Yes, you will need either HRC SP1 springs (and HRC retainers necessary for the HRC springs) or other aftermarket springs that will accommodate the higher lift. That goes for any cam that has more lift then OEM on the RC51. APE may have something, Morawaki may still have some springs available, I would stay away from Kibblewhite as Erion had problems with the Kibblewhite springs on the 51.
Dale, if you can still get your hands on the HRC SP1 springs I will take another set.
I am not biased between either Dales or Thorstens cams but I know guys running dales cams with out issues and they do perform and are made very well. I am sure Thorstens cams will produce good numbers and with Josh heading up the project I am sure they will be made to the highest standards. If I remember right Thorsten likes lots of intake lift something like 12.4mm IIRC. The more lift the more stress will be placed on the springs and at revs like 11.3k valve train weight is going to become very important. Lightweight retainers (like HRC) good valve springs that are inspected frequently and may need to be changed in as little as 1000 miles (race or track use miles). Ti valves are good for high RPM but expensive and require more maintenance. Dales cams increase the lift to 11.4mm and have a modest gain in duration so they are a nice step up from OEM but not as radical as the HRC or Mori STG2 cams. They will be more forgiving on the valve train but may not make quite as much power as Thorstens. The real benefit is the fact they are strong and are not prone to snapping. In any case you will need to replace the valve springs and Aluminum (HRC) or Ti retainers. Knowing Josh, he probably has a source for Ti buckets, retainers and good springs already.
As far as I see it the HRC retainers are drop-forged.
However, I will contact somebody today maybe to fab them from Ti
But the HRC Retainers have lasted very long, approx a year with ~ 16-18 days on track.
There's also a trick to lighten OEM valves about 8-10 Gramm ( which is essential for higher revs) ,does not affect longevity, more later
Hey Dale , are there ( at your "source" ) enough HRC retainers available ?
I would appreciate this, then there would be no need for me to fab them from Ti .
I think ( either me or someone else ) should contact Simons contact in Japan
I will anyway once the Cams are done, but I really need to know if they have got 100's or just a couple of those retainers in Stock.
Meantime I will search for my modified OEM RC ECU and the Bits which are necessary to raise RPM Limit.
i talked to simons cantact in japan. this is what he replied with.
"" Thank you for e-mail
I checked price
16x # Valve spring:14750-NL6-700 = 1,980 yen
16x # Retainer : 14771-NL6-000 = 1,980 yen ""
so 1980 yen = 17.99$
I am assuming those prices are for each spring and each retainer.
so it looks like it comes out to about 288$ dont know about
the shipping
Do you think you can ask him how many units are on stock ?
And - you also need the HRC valve Seats/Washers un the Bottom, which are damn expensive ( as far as I know).
But I have let them made already over here, the amount should last at least for 10 Engines.
Do you think you can ask him how many units are on stock ?
And - you also need the HRC valve Seats/Washers un the Bottom, which are damn expensive ( as far as I know).
But I have let them made already over here, the amount should last at least for 10 Engines.
waiting on the reply from simons contact.
So are you saying you already have valve seats/washers made already?? Also are you saying I should buy enough for 10 engines??
Thorsten I can hear your german accent even in your text
Yes I have the Valve Seats/Washers for the HRC Retainer/Spring Setup.
Just have to find them... .
And I also have all the Specs here of duration, when to close ( BTDC) or open an why, hehe, and if I know something, then I know that my Bike runs strong, really strong.
I do not have a clue at all when it comes to Engines and lift and duration and all that stuff.
Probably I found a good adjustment by pure luck.
And I also have all the Specs here of duration, when to close ( BTDC) or open an why, hehe, and if I know something, then I know that my Bike runs strong, really strong.
I didnt find the specs on your website can you email them to me?
also is adjusting the timing a must-do with a mod like this??
and one more thing what are we looking at here?
""modified OEM RC ECU and the Bits which are necessary to raise RPM Limit.""
The ECU mod will be in Josh's Hands.
I have to find the ECU ( must be somewhere here or in Stock).
As for the Timing :
I first need to finish the 1098 Project and maybe some other Stuff Wintertime, every minute counts.
Once the Cams are done I will search for my documents.
One set of HRC retainers should last you a very long time. I have never heard of anyone having problems with the HRC retainers. Honda guys have told me they are near bullet prof. Having a extra set of springs on hand cant hurt, that way when its time to freshen up the engine if you cant find the springs at that point your not out of luck. Depending on the cams, Dales, Thorstens, Mori Stage 2 or HRC and how hard you are on the engine will determine how long the springs will last. The HRC springs with HRC cams had a recommended service interval of something like 1000 miles but that was with a 12,000 RPM limiter and never seeing anything below 8,500 RPM durning its life. The HRC cams are more aggressive then Dales grind so Dales cams should be much easier on the springs. Light weight valves, buckets, retainers wont help with spring life. The light parts are only needed to prevent valve float and the damage that WILL occur from the lobes smacking the buckets at high RPM. The HRC springs actually have less seat pressure then OEM and therefore require some mass reduction to prevent float especially if the limiter is to be raised over stock. No one can tell you exactly how much mass is required to loose for any giving RPM limit or cam combo, only an educated guess.
For what its worth, the only thing I can tell you about the HRC seats are they where Ti. I am double and tipple checking with some Honda guys regarding any other, if any, differences that would "require" the kit seats. I should hear back from them in a day or two.
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