Carrillo rods arrived!!!!
 

My custom Carrillo rods finally arrived today. Will be posting pics and weight data later on today......

Coming soon: one kickass rebuilt VTR engine... muahahahahahah

damn you, you frenchies always do the coolest most uncalled for stuff, i love it, get pics and dyno numbers :D

Will do (BTW, I spent the vast majority of my life in Ontario). Neat parts going into the rebuild so far:
- 0.5 mm OS JE hi-comp pistons (same as Rick's, same batch), with moly skirt coating and ceramic top coat
- DLC coated piston pins and valves
- ceramic transmission bearings
- FP Shift Star

I will be getting the crank assembly balanced to the new bits too, for smoother running and greater durability.....

i will be watching..........when your finished,you think you could ship it here and slip it into my project?...lol.

good luck.

Just finished weighing the rods on a digital scale (OEM rods are an extra set I bought on eBay with the original intention to use before decidign to go ahead with the Carrillos):

OEM Rear: 535.9g
OEM Front: 538.6g

Carrillo Rear: 457.1g (78.8g; 14.7%)
Carrillo Front: 456.3g (82.3g; 15.3%)

Weight difference from stock is in brackets, pretty significant IMO. AS this is reciprocating weight, it should result in an engine that spools up noticeably more quickly (especially when working with the lighter flywheel, pistons, rims, brake rotors, aluminum clutch plates)....

Pics are next....

thats bad ass man. how much is this build setting you back? it may be cheaper for me to build my motor than to buy another bike, and what kind of power are you expecting?

based on what I have now (realistically estimated at @120 hp and 75 lb-ft), I figure that the new bits, combined with the freshening up of the engine (whihc now has almost 140,000 km on it), should get me damn close to 135 rwhp and 85 lb-ft. Combined with a weight loss of about 60 lbs (much of it rotating weight), it will be a rather wild ride and excellent sleeper bike for unsuspecting squids, lol She goes VERY nicely now, the added boost will make it insane......

Glad to hear they made it ok. Sounds like you will have one hell of a motor...
So where are the pics of those fancy rods...... ;)

thats sweet shit. i didnt notice but are you still using the stock crank? i hear these motors tend to come apart at about 140 hp. i hope yours doesnt because i wouldnt ind seeing if i could get a little more pep out of mine in the future :D

are you able to spin her up a little higher with the work done to it or is she still gonna redline at 10500?

Beautiful, aren't they?

FWIW - 120 HP is 66.3 ft-lbs at 9500 RPM. Peak torque is at a lower RPM (~8500) and may be ~70 ft-lb.
I'm not sure how you expect to get to 85 ft-lbs. as far as I know, 135 HP is gotten with higher RPM and something like 70 ft-lbs of torque. But I know that I don't know a lot. A well developed RC51 maxes at about 75 ft-lbs torqu and a peak of ~140 HP at 10,000 RPM, with stock cams.

Whatever you end up with will be a wonderful beast. Good luck!

I'll tell my latest story in another thread...

I spoke to Roger Ditchfield about crank durability issues and he informed me that problems arise with really aggressive cams. It is not, he stated, a function of rpm or combustion pressure. the problem lay in a shearing taking place in a corner of the crank forging, the HRC billets cranks that were produced had a smoother transtion to help alleviate the issue. He assured me that my Yosh Stage 1 cams would not cuase me any problems.

AS for rpm, my rebuild will maintain stock rpm levels. For this reaosn I am maintaining stock valve sizes and, in fact, had my Yosh cams re-timed by 2 degrees (upon installation)to keep the peak power down. The changes will basically add more power across the board (largely due to bump in compression and better sealing from new piston and rings) and make it a real sweet street engine.

FWIW, my last dyno run had the engine putting out 71.1 lb-ft at the rear wheel (at 7000 rpm, same peak rpm level as stock btw; Peak hp was 112.8 at 9K). Since then, I have gone back to a modded airbox (a change which netted me about 2.5 hp and similar torque in the past), as well as added ceramic wheel bearings, stick coils and BMC filter (and a new chain, the old one having run its course), hence my 75 lb-ft estimate.

Sounds good, Mik!

I don't know if I'll actually get around to mine this year. It works really well.

Pics (sorry if they are not perfectly clear....)

im honestly a little afraid to tear into my motor. last time i did that with a car i finished with an 8400 dollar motor that had an oil pump failure at 7400 km. but man was she ever fun until that happened :D

LOL, aww, they're so short! Man they're beautiful aren't they. The stock one's look like something you would use to dig a hole with..

I have the same concern. While I don't especially like having to fork out money to have someone rebuild it, I know it will be well done (especially given the chap's expertise and track record). He has been doing work on my bike from day one and I don't have a single bad thing to say so I will hand him "my baby" in full confidence....

right on, you guy sounds more compitant than my guy did. lol. cant wait to see vids of her running when done and i bet its gonna sound mean as shit :D

I imagine/hope it will add some bark to the exhaust note (already sounds pretty nice with the full Akra set-up). I am looking forward to seeing how quickly the tach jumps too (especially with the short-throw HRC throttle tube I am using.... woohoo!!!)

lol, my only advice is to keep the right foot over the rear brake jsut in case, lol

I don't know that I would have built a motor, if it wasn't for doing it myself.

The meticulous process and taking all the pretty parts and measuring, checking, installing are a very big part of the satisfaction. Then you get to turn the key and have this machine you just built come to life. The added performance is almost secondary.

But that's just me. It's not for everyone.

I can definitely relate to what you`re saying, but I chose to keep my work on grounds I feel more comfortable with. In my case, I tend to have a knack for finding unorthodox ways of solving problems (am also not very patient)..... The list of off-the-wall "solutions" on my VTR (and previously on my snowmobiles) is fairly long. They don`t always work, but often do too, which is also quite satisfying as it`s usually stuff no one (or very few) have thought of before......

mikstr, can i ask how much cost a pair of rods like this?
Where have you ordered?

thanks... ;)

The rods cost me $599 US and were ordered from Dynoman Performance.