[bryan niles]

I am subscriging to this thread keep us informed.:secret:

 

[bryan niles]

The .30mm yec gasket will raise compression to about 12.74 -1 compared to 12.4-1. I used the compression ratio calculator posted up by r1 scooter.:rock

 

[bryan niles]

your CR 12.87:rock

 

[bryan niles]

fantastic work going on can not wait to see how much hp gain you get.:rock

 

[bryan niles]

Yamaha has spent big bucks developing an ECU/servo controlled secondary butterfly. Not to mention the production cost of having it on every bike. If they were an unnecessary component, they would not exist. What they are is an evolution of the vacuum slides. What they do: provide smooth, predictable throttle response. They will never limit the power when you need it by only working out of synch with the main butterflies, except at very light throttle. All they do is smooth the off throttle stop power surge. This is why people seem to think that they gave you gains when removed. They get tricked into feeling more power, because it is initially more abrupt. After you get to say 25% throttle, they are in synch with the main plates. If you actually take your R1 around corners the last thing you want is a snatchy, twitchy throttle when you crack the gas open.

I recommend not touching them at all.

Five Oh I agree with you on one point and that is that it does not increase hp it just that the hp comes on sooner and people think they have more hp. I do not agree with you on the snatch isssue. I have had mine removed for a year and just got a custom map and you would not even knowthey have been removed. The bike pulls from 2000 all the way to redline as smooth as butter. I recommend that people who remove the secondaries get it custom mappes and then make the decision. I am never going to put mine back in. That is my 3 cents worth.:riding

 

[bryan niles]

I agree that the bike can still pull strongly and smoothly from 2000 up. Opening the throttle at 2000, there isn't an over abundance of power to surge out. My concern is if you close the throttle at redline approaching a corner, get the bike cranked over, and then have to open the throttle at full lean @ 9000rpm. At 9 grand, there is a ton of power and if you are sloppy and open it quicker than intended or the bike wiggles and you transfer it into the throttle it can spell disaster.

I'm curious what you believe the benefits of removing them, to be?

Being able for the power to come on sooner. At 260lbs I will take everything I can get to keep my big butt moving. Also my bike is all street bike. This mod is on a personal preference. I like it because the power comes on quicker. Also the throttle hand is always on its a game. Quick Question did yamaha do away with the secondaries on the 07 by using the varable intake tracts.:riding

 

[bryan niles]

Yamaha didn't ditch the secondaries on the '07. They did away with the primaries! :secret: The stack length has nothing to do with the function of a cpu controlled butterfly.

It seems to me that the intake is the same as the r6.why would they get rid of the primaries and not the secondaries

 

[bryan niles]

They did the same thing on the r6. Only one set of cpu controlled butterflies. This allow the ECU to fix small 'mistakes' in your wrist and smooth out any peaky parts of the torque curve.

It now makes sense everything is computer controlled and nothing is directly controlled buy the wrist.:riding

 

[bryan niles]

There should be a sticky by this as this is great allaround info for people looking into doing head work.:secret:

 

[bryan niles]

Hey Marc and Jay, after seeing how far you guys will go for a little performance, I'd fiqured i"d let you in one a little known secret.:secret:

I use this on all my motors now, but I've NEVER seen any rider that can use all the throttle when I fully engage it. It can just make TOO much power. Screw cams, this is the super bonneville killer, triple throwdown daytona destroyer version of one of my most closely held secrets. Just don't tell everybody how you got so much power.

Hope you can handle it!
http://cgi.ebay.com/ebaymotors/98-9...F-Chip-Module_W0QQcmdZViewItemQQcategoryZ33597QQihZ012QQitemZ220052878129QQrdZ1 :lol:lol:lol

You should have told me this before I got my full system, I wasted so much money. Only 35$ thats a bargain.:secret:

 

[bryan niles]

sounds great can not wait to hear how she rides.:riding

 

[bryan niles]

I will say it Why is this thread not a sticky yet. Fantastic info for everybody.

Please get your boy out of vacation and tell him to dyno your bike. :secret:

 

[bryan niles]

not to get off topic but I have a krankvent on my 05. You all are saying to have 12 inches of tubing from the crankcase breather to the Krankvent. I know I have less than half of that at the most about 6 inches. Does the length really matter. I know it is in the right direction but want to make sure I am not jipping myself of a free hp. The bike dynoed like a monster at ferracci . I posted a graph titled 168 rwhp. Back on topic that hvp looks like it is the real deal for your 03, can not wait to see the corrected cam timeing results.:bow

 

[bryan niles]

we all must be!

I've read all the arguments about milling the head & swapping gaskets & I'm afraid I still don't get it.

If I split my gasket I raise compression & lower squish. right?

now if I mill the very same surface that the gasket is touching why have I not raised comperssion & lowered squish?

either way I'm bringing the head closer to the crankshaft, thus closer to the piston crown, raising compression & lowering squish.

if all of what I've said is NOT true, maybe somebody could draw me a pretty picture? I've thought about it real hard & just don't understand. :dundun:

Contact forum member r1 scooter or search for the thread istarted I think the title is .30 yec head gasket or something very close. he explains what you are asking in that thread.:secret:

 

[bryan niles]

My 99 RIP had an attack performance ram air system and I had Keihin 41 mm Flatslides on and I remember the mains were in the 180 range and the pilots were in the 50 range if that helps. With those small jets it sounds like the ram air is sufficating.:secret:

 

[bryan niles]

Ah.....shoulda caught that just by looking at the frame rails. Duh.

I'd go after the 41mm carbs/Attack airbox, but the guy wants $1200!!!! I'll call him tomorrow, but that's a bit much right now. Maybe I can talk him down.

No 39mm carbs? Damn. Guess I'll still go after the head, but drop the carbs. He wanted $600 alone for the head.

Damn....this road I'm traveling is starting to get a bit crazy....:dollar


.....and, might be a smart idea to ask Lee's tomorrow about optimum engine parts for a carb'd R1....before I just start throwing money down the drain.

I had the 41 mm Flatslides and Attack performance carbon fiber airbox on my 99. It will bobble a little bit on the bottom end but will sing once you get past about 6500 that is when the combination takes off. Also I paid 1200 for the flatslides and 700 for the carbon fiber attack air box back in 2000 and that was brand new. I would see if he would go to 1100 or 1000 for both.

 

[bryan niles]

Well, Blur1 already knows what's going on, but.....

I got SCREWED on the race head. I knew it the first time I looked at it. The intake and exhaust ports have never been touched, and the valve seats are covered in carbon. The thing really looks like crap. I can't tell just looking at the cams if they're aftermarket or not, but the cam sprockets aren't slotted, so I'll just say no right off the bat. I'm really disappointed right now, because I wanted to drop this head on with the carbs and airbox, and make some good HP. I paid this guy 600 bones for the head....and did so thru Paypal. Not sure if I have any recourse, but I sent him an e-mail today asking for a refund. Guess I'll have to wait and see if he replies. If not, I got a really expensive spare head that I need to have some work done on.

I DID get the 41mm Keihin flatsides and the Attack airbox....that stuff was in great shape.

So....I guess I have a decision to make. Do I just put my OEM carbs back on to avoid dyno time, or will the 41mm carbs really make that much difference on a stock motor? The Keihin's will have to be jetted and sync'd, and the OEM carbs are ready to go. I also have the ram air to consider, but according to Blur1, he made MORE hp running the STOCK airbox. Guess I could run the 41mm's, go with a base setting on the jets, sync them myself (got a good sync tool) and run the stock airbox. Not really sure which direction to go. Hard decision.

Enjoy the pics. :no

1: valves on the crap head
2 & 3: exhaust ports on the crap head
4: intake port on the crap head

I had the same setup on my 99 attack box and Keihin 41 mm flatslides and it has to be real world tuned if you know what I mean. Take it on the road is the best way to set it up. Hard to tune on dyno with nothing blowin into the ram air box. just curious what was the name of the guy you bought the flatslides and box off of.

 

[bryan niles]

Thanks Brian....good info to know.

What difference did the carbs and box make? Really noticable?

The combination made a huge difference. It is hard to see the affects of the ram air on a dyno as it is hard to simulate. It will wake up at 3000 on up and scream at 9000 +. The only downside is that the flatslides are not made to idle very long and they will bog if if yo do not blip the throttle occasionly. Other than that you will love them. The mechanic that did the work on my 99 said that first gear was useless. All it did was send the front end to the sky with out trying. good luck with the setup it will be an eyeopener when properly tuned. Tune it at the track and yo will get better results.
time to use some old time tricks looking at the exhaust tip and the likes.

 

[bryan niles]

If it helps I run my flatslides with the foam sock type airfilters only, No airbox.Didn't loose anything on the dyno either.

I had mine like that and wanted to have the flatslide pressureized and like it. I am not going to lie it takes a lot of patientce to properly tune the flat slides and ram air setup. This is one time that it would pay to have and a/f sensor and data logger to tune the bike on the track. You will getting the real world ratios as the ram iri kick in. And yes blur My jetting was real high from tuning on the road. The mains where in the 180 range and the pilots where in the 50 to give you an idea. The bike ran balls to the wall. 2nd and 3rd gear throttle wheelies with my big butt was not a problem. one other thing I had a full Nology igntion system on my bike, coils, and amplifiers 2 of each.:dollar

 

[bryan niles]

Sweet pics I think firehawk has more of my 99 than I remember. the graves link and the titanium axles and swingarm pivot. nice Beautiful. I will not tell him that I have a set of Attack Magnesium Triple clamps from my 99 on my 05 opps I slipped. Love the brake setup. on the rear is that a p2-24 brembo caliper.:boobies :boobies :boobies