RC51 Forums banner

361 - 380 of 388 Posts

·
Registered
Joined
·
248 Posts
Oh, I forgot the experiment....W/O any blocking of rads, the hi speed temps were 160-170...in town was 200's..... I may make a small AL plate to block the upper rad as one of the pics above showed. I am theorizing that the stock thermostat unit w/o the thermostat runs a little warmer than the moriwaki delete as some of the water should be bypassing the radiators as I still have the bypass line hooked up, thereby raising the temps slightly. I believe my old temps were 150's highway speeds...., so obviously something is working.

Also, ambient temps were 55-60 whereas the moriwaki test ambient was about 80..so, colder ambient but hotter rad temp. Warmups are not bad either....5 minutes maybe.

The U 4.4 is awesome...glad to have it back...IMMEDIATE throttle response...very crisp...love it....still may install a 39T rear sprocket...got LOTS of torque to pull it....40 intoiwn is no problem at all.
 

·
Registered
Joined
·
248 Posts
OK, new experiment...the bike was running 165 f on the highway with the thermostat out and 180-90f intown...I wanted to raise the highway temp w/o raising the intown temp, therefore, I thought instead of BLOCKING the radiator with a plate, which would give me higher temps everywhere, I'd DIVERT the air at spped but keep the radiator unshrouded at stoplights.

Below are pics of my diverter...air is diverted around the front rad. while in motion but isn't so shrouded at rest that temops go up at a standstill...best of both worlds.

Oh, my 50/50 fuel doesn't run well with the gas map switched on....LOL
 

Attachments

·
Registered
Joined
·
60 Posts
I have been scanning your pictures page after page (amazing bike porn btw) looking for a picture of the exhaust mount bracket hidden behind your sato rear-set. Do you have a picture of the mount? I will be installing the Jardine Ti 2-1 and I have the same rear-sets as you. All your help is much appreciated.
 

·
Registered
Joined
·
248 Posts
I have been scanning your pictures page after page (amazing bike porn btw) looking for a picture of the exhaust mount bracket hidden behind your sato rear-set. Do you have a picture of the mount? I will be installing the Jardine Ti 2-1 and I have the same rear-sets as you. All your help is much appreciated.
YEP, I have 2 of those brackets...was thinking of chopping one up to make a new MC bracket but luckily, I didn't have to...I believe they are std sato mounts...kinda like a black bent thick bracket.....PM me your address again and I'll ship one to you.

SENT!!!
 

Attachments

·
Premium Member
Joined
·
289 Posts
F#ck me man, what an ordeal! I thought I was a patient individual. Dude, you are like a Shoa Lin Monk! Quai Chang Caine! Congratulations on what has to be the most awesome RC51 I've seen anyway. Is the ideal running temp 185 or so? I know there is fluctuation with the fans on, or off, and the riding conditions, etc. Just wondering what is "Normal" parameters, temperature wise? Being in NorCal, it is cool this time of year, but right now we're having temps in the 70's, and in the summer, well, 90's to even 100 degrees is the norm. I rode my bike yesterday, temps in the high 50's to low 60's. In traffic I believe I saw close to 220 or a bit higher while sitting at a light.
I purchased Wibbly's fan switch which has not been installed. Will certainly get that in before late Spring. Also I want to install the SPAL fans if I can get ahold of those cool (pun) fan brackets. *cough*cough*. Gonna do the water wetter as well. RCCBRZ, if I had your duckets, I'd be pursuing the same type projects you are. Since I don't, I'm inclined to want to obtain more complete bikes, to add to the garage for now. A project like you just completed would be a goal for sure in the future. I've bought alot of nice bits for my RD-400. I'll post pics when it's done, and I set up a garage page. Thank you for sharing this awesome project!
 

·
Premium Member
Joined
·
289 Posts
She's apart right now, but I bought a set of these for her! Also have a JVC Cafe seat, Power Dynamo Ignition, Daytona Head. Plus all the usual stuff like bronze swingarm bushings, new tapered steering head bearings. I have a new top end for it, but since it's been sitting so long in my garage, Mechanic says gotta split the cases and replace crank seals, etc. I bought it from the original owner with only 2900 miles on it. Sorry for the thread hi-jack guys. I think the OP's bike needs to be entered in the BOTM contest, if not just awarded BOTY!
 

Attachments

  • Like
Reactions: LDH®

·
Premium Member
Joined
·
289 Posts
ahhhh...to which left side were you refering sir?.......
Left side has a few more curves than the right side for some reason.
 

·
Registered
Joined
·
248 Posts
THIS left side???
Hey Mr Collins, tks for the compliments...No I am NOT patient but when you engine is across the ocean and the chassis is across the country, you have no choice but to be patient (or pissed, lol).

Bike stays in the 185-200 range depending on speed...Its easy to cool or heat it up by blocking more or lesss of a rad...may make a slidable door to allow quick adjustemnt....

Love the daytona RD, the white one...love the ring dings from my 70's era....

BTW didn't you drag race bikes back in the 70's? atchison, topeka and santa fe honda 3 engine? LOL.
 

Attachments

·
Premium Member
Joined
·
289 Posts
Nah, I let a young kid named Terry Vance do all the wrist work. He was the original White Lightning. Your bike is getting better looking with every post!
 

Attachments

·
Registered
Joined
·
234 Posts
Could have the story wrong but I believe A.T.& SF is a coffee table now. Apparently Russ got to 199mph in the quarter but a later attempt had the bike trip the lights at 200 but Russ wasn't on it. Oops! As to the RD400, love all the RD's. I had a 73 RD350 for around 5 years with a few mods to the piston intake ports and so on. Had to throw new pistons at it pretty frequently but it was worth it. Smoked a few Z1s on the ride from Falls Church to Summit Point on that one.
 

·
Premium Member
Joined
·
289 Posts
Yeah, I had the poster of the Sorcerer. 199.55 mph. It was a two 750 Honda engines I believe. Punched out to who knows what displacement. The AT&SF was a triple. Byron Hines was/is a genius.
 

·
Registered
Joined
·
248 Posts
The engine is awesome here in NORCAL...Hwy 32 to lake almanor today 140 miles round trip...lots of 90mph sweepers then 25 miles of 2nd/3rd gear twisties...beautiful valley and creekside views....goes through lassen national forest....

loads of torque makes it great corner to corner....still running too cool, giving some stuttering at WOT...put cardboard on front rad. and will try again tomorrow....dual battery hardly uses any electricity when running above 5000 rpm.

You really have to haul ass and ride aggressively to make the bike work as I am sure you know...it sucks as a DD..until you hit 80-100+, then it just drives itself around the corners...

VP fuel and light alternator gives it that snap....Would have liked to have had my kent cams for some overrev on top but in the canyons, there's plenty....

to do over I'd go high on the C.R., 11.6-12.3 C.R. and keep my 40t and use the gearing for overrev on top.

Dropped to a 41 from a 40t rear sprocket to help in those tight twisties..otherwise the 40t was great on the fast sweepers.

Anyway, my biggest fear is going to jail or hitting a dear....this thing needs to be on a track to have fast, safe, consistent fun so that's where Ill be in the future.

Evan built an awesome motor...can't say that for the other small details but, I took care of that myselfWould like him to build me a cbr 1000 like my old repsol for a DD and go fast bike....SO much easier to idle around town and maneuver and kick ass too.....good all around bike......I LOVE my RC but its too track focused and that's where it should stay.
 

Attachments

·
Registered
Joined
·
474 Posts
I'm really glad to hear this update. I was wondering how the engine build was holding up. Ill take the gear to them now. I do plan on using the cams that I have. I would like to go with high compression however I plan on running this bike with 91 octane.
 

·
Registered
Joined
·
248 Posts
Call Evan to see if he is on the circuit...He has a new job with HRC that's keeping him out of town a lot....have him cryo the entire engine..its like 280 bux and a guy near his shop does it.

The RC can handle the CR on 91.....I have to drop my octane on the VP with 87 to get it to run decent...really, the VP fuel is the easiest cheapest 5 rwhp you'll ever find....and it makes the throttle response so snappy! I just put a switch on mine to alternate the maps from 50/50 VP/87 and 93 so you don't always have to run it...Ask Evan, he set mine up..
 

·
Registered
Joined
·
248 Posts
I have never seen one-you have to think about the cam gears meshing as well....you may be able to get Evan to mill 0.010 off the head...I read once what was achievable w/o running the cam gear meshing properly but I forgot what it was....that's the limiting factor.

If you haven't bout your pistons yet, I'd get dynoman or CP, JE to make a custom set (11..6-12.4)....stock JE is 11.3, with anodized ring lands, top coated, underside lightened, then wpc skirts.

Wiseco wrist pins are 80gm,...JE or like 110 or so...Wisecos are tapered on the ends....keep the reciprocating mass as light as possible.
 
361 - 380 of 388 Posts
Top