crowerperformace
crowerperformance
we'll i know this is a spec class but what are the actual rules on cams / timing and blueprinting the engines , whos getting away with what ?
cams/timing/whats the skinny
- Thread starter crowerperformace
- Start date
crowerperformace
crowerperformance
the rods are kinda weak in these things , has anyone had any rod bearings go out
Team Green
Reid Nordin - UTVUnderground Approved
Dan,
What actual class are you referring too? Also what vehicle are you asking about the Rods on?
In most UTV race classes there is no real Spec class. They are limited by CC and not much else. Rule usually only specify original UTV specifica cases and castings, pretty much everything else is a free for all.
What actual class are you referring too? Also what vehicle are you asking about the Rods on?
In most UTV race classes there is no real Spec class. They are limited by CC and not much else. Rule usually only specify original UTV specifica cases and castings, pretty much everything else is a free for all.
tech3sandcars
Tech3 Sandcars
Hey Dan, nope its a free for all, stock block and cylinder head castings, 1000cc max, everything else is wide open. What do you have in mind for ideas???
crowerperformace
crowerperformance
r1 engines are what im talking about, we have a few recipes that are ripping. id be doing rods for sure and if the cams are open then its ON.
all stock R1's, 02-03?, 04-08 years. only exhaust, air fitler/intake and maybe ECU is allowed only.
no cam change, no overbores, no cam timing allowed. for LOORRS, I have no idea what is allowed for the dezert R1's
crowerperformace
crowerperformance
lol yeah trying to trick me .. i knew its a stock type class but there are many oem parts that will make a blueprinted r1 thats legal. i have afew really cool things i do to make the torque jump up and be a legal thing if torn down.
Wild Earp
50Fifty Racer - UTVUnderground Approved
SR1:
a. Stock Yamaha R1 engine (year 2002-2008) is required for all Rhino vehicles.
b. Stock Kawasaki ZX-10 engine (year 2004-2007) is required for all Teryx vehicles.
c. No modifications of any kind can be made to engine.
d. No modifications to throttle bodies can be made.
e. R1 tip over sensor must be left intact and in working order on Rhinos.
f. Engines must be mounted between the driver and passenger seat locations utilizing
the spec mounting plate.
The whole point of the class is to take the motor out of the equation, so it will be more equal, and people can spend more time/money concentrating on suspension tuning/driver skill, etc.
a. Stock Yamaha R1 engine (year 2002-2008) is required for all Rhino vehicles.
b. Stock Kawasaki ZX-10 engine (year 2004-2007) is required for all Teryx vehicles.
c. No modifications of any kind can be made to engine.
d. No modifications to throttle bodies can be made.
e. R1 tip over sensor must be left intact and in working order on Rhinos.
f. Engines must be mounted between the driver and passenger seat locations utilizing
the spec mounting plate.
The whole point of the class is to take the motor out of the equation, so it will be more equal, and people can spend more time/money concentrating on suspension tuning/driver skill, etc.
crowerperformace
crowerperformance
this is a good class rule , but being that there are differnt oem parts that can be swapped to make it run better. ie: pistons , cams , valvesprings, injectors. many oem parts can be mixed around and no one would ever know. the road race engine builders do this same rule engine building and just know the combo's that pass tech and run better than normal. id like to see an opening to aftermarket rods because of rod bearings burning up cause of weak big ends/rod bolts on the oem rods, they have an issue staying round and the extra load created when used in a 4 wheeler even makes more sense to allow aftermarket parts. just my .02c .... for what thats worth . the damn polaris is coming though , a warmed up 900 should be right on track with the best sr1's.
dnf736
Retired - And Still UTVUNderground Approved!!!!
Speaking strictly from a car owner at LOORRS point of view, my long winded response. It is not intended to be adversarial or dicky in any way, just stating my opinion.
You're talking about street bikes, how many street bike are there out there both street & track compared to SR1's? Using that analogy doesnt really work for the 10-12 of us that show up at each LOORRS race because it will become about who can out spend who.
The intent of this class as originally written by the Wellers was to give participants an alternative to the dollars associated with the Unlimited UTV engine & use junkyard engines. This would help keep the cost down so we could focus on driver & chassis and less on engines to keep people racing at a LOORRS level however, with the addition of the Teryx/ZR1 and its many available what I call gray area parts (yes YEC has them too with a Yamaha number on it but goes against the spirit of the class) there is now talk of a mandatory V8 Prolite like rule for these SR1 class engines where they will have to be built and sealed by an outside vendor to keep people from using these gray area parts & level the playing field….again....like it was originally intended to be.
If people start using these gray area parts and we have to go to sealed engines this will drive the price up considerably which could make the SR1 class be as dead as the Unlimited class is. The car counts die, and the class most likely goes away, not what anyone wants. Also, something that seems to be forgotten here, the UTV class is two races before the National Anthem, they are not part of the show. Even when they had 25 cars showing up at CORR UTV’s were still treated by the promoter as one step above bar stool racing so looking for “creative way†to skirt the rule book I feel is counterproductive to our success.
IMO if you have to use gray area parts to win you're more or less cheating yourself...we have two used engines, both from Ebay, one has never been opened, the other was opened when LOORRS wanted to look at the cams. If they pop, $900-$1200 buys a replacement, nice and cheap, easy to source, and keeps most everyone coming back but as cheap as that is one team has thrown in the towel due to racing costs (LSR), start playing with mod engines and you'll lose more.
Now, you want to sell me a cam? At $5.00 a gallon for diesel how about developing a cam that lets my Power Stroke pulling 11,000lbs get 3mpg more to the gallon for our upcoming 1600 mile round trip to Utah, that’s what I’m interested in because if the price of fuel continues gray area parts for SR1's will be the least of anyone’s worries.
#816's owner.
And I am serious about that cam.... we could all really use one right now.
You're talking about street bikes, how many street bike are there out there both street & track compared to SR1's? Using that analogy doesnt really work for the 10-12 of us that show up at each LOORRS race because it will become about who can out spend who.
The intent of this class as originally written by the Wellers was to give participants an alternative to the dollars associated with the Unlimited UTV engine & use junkyard engines. This would help keep the cost down so we could focus on driver & chassis and less on engines to keep people racing at a LOORRS level however, with the addition of the Teryx/ZR1 and its many available what I call gray area parts (yes YEC has them too with a Yamaha number on it but goes against the spirit of the class) there is now talk of a mandatory V8 Prolite like rule for these SR1 class engines where they will have to be built and sealed by an outside vendor to keep people from using these gray area parts & level the playing field….again....like it was originally intended to be.
If people start using these gray area parts and we have to go to sealed engines this will drive the price up considerably which could make the SR1 class be as dead as the Unlimited class is. The car counts die, and the class most likely goes away, not what anyone wants. Also, something that seems to be forgotten here, the UTV class is two races before the National Anthem, they are not part of the show. Even when they had 25 cars showing up at CORR UTV’s were still treated by the promoter as one step above bar stool racing so looking for “creative way†to skirt the rule book I feel is counterproductive to our success.
IMO if you have to use gray area parts to win you're more or less cheating yourself...we have two used engines, both from Ebay, one has never been opened, the other was opened when LOORRS wanted to look at the cams. If they pop, $900-$1200 buys a replacement, nice and cheap, easy to source, and keeps most everyone coming back but as cheap as that is one team has thrown in the towel due to racing costs (LSR), start playing with mod engines and you'll lose more.
Now, you want to sell me a cam? At $5.00 a gallon for diesel how about developing a cam that lets my Power Stroke pulling 11,000lbs get 3mpg more to the gallon for our upcoming 1600 mile round trip to Utah, that’s what I’m interested in because if the price of fuel continues gray area parts for SR1's will be the least of anyone’s worries.
#816's owner.
And I am serious about that cam....
we could all really use one right now.crowerperformace
crowerperformance
yes on the powerstroke cam and con rods , way more torque , little more mileage... yes on the spec series , i know a lot about the prolights.. i get it... but the wood brothers , aj foyt and thosands of other real racers racers have raced the smarter way to win , not cheating. there is hidden power legally. not my fault that you can mix up some stock parts and have a better mousetrap.
crowerperformace
crowerperformance
speaking of car count , i can almost do all of them on one hand , im not sure it could die anymore than it has. open it up and more will run, look at the indy 500, it was run what you brung kinda from 1920 till the 80's and used to have 50 -70 cars trying to qualify now that its full spec series its dead as bin laden , barely 33 cars this year if lucky... spec racing blows and yes it creates higher cost actually for these grey area build ups that are legal.
Weller Racing
I Make Things Go Fast - Official UTVUnderground Sp
An SR1 needs to have a completely stock engine as it came from the factory upon production. No factory race parts are allowed. No "rubbing" or "modifying" allowed. The class started with a great core group, but it seems that it is getting more frustrating each race we go to with all the rule changes. Last year was a huge success, but this year it is falling apart because the class is getting "opened up" just like you want it to. In my opinion the rules need to get tighter to give some return to those that have bought into it this far.
facteryfmf
Looking For a Few Good Men - UTVUnderground Approv
Cheaters.
crowerperformace
crowerperformance
the xp 900 is gonna be the final nail in the sr1 coffin.why build a money pit that breaks when a Polaris is the new ticket to finishing races. .. it was fun while it lasted but the twin is a superior machine in my book
Weller Racing
I Make Things Go Fast - Official UTVUnderground Sp
We love the xp also. Polaris did an awesome job!
We have sold more sr1 kits in the last Month than we ever have, so it appears to be only getting bigger.
maybe not, there was a many Rhinos out there that could not keep up with the kawis without being a time bomb. the SR1 is a way to keep using the ol Rhino race cars.
crowerperformace
crowerperformance
i like what you guys did with the bringing up of the sr1 but the polaris people really did there homework. for 16k you can go race the xp basicly as is. the drive line is superior to the sr1's , the firing pulses of the twin are better than a 4 cyl's for traction and the weight/balance of the car is incredible for an oem product. i really think we are just scratching the surface of the twin xp900's. if we can squeeze another 15 - 20hp out of her its a championship machine in any class its in.
Wild Earp
50Fifty Racer - UTVUnderground Approved
xp900 isnt even in the same class as SR1s, and there are 8 SR1s for every xp900 at the races right now.
Im (still) not racing my SR1, but from what I hear, I think the sealed motor idea is the best to keep the class as it should be. And/or a claimer rule.
Crower, please stop trying to ruin a class your not even associated with, just to make a buck. Move on.
Im (still) not racing my SR1, but from what I hear, I think the sealed motor idea is the best to keep the class as it should be. And/or a claimer rule.
Crower, please stop trying to ruin a class your not even associated with, just to make a buck. Move on.
crowerperformace
crowerperformance
polaris just released there car , give it a full year and retally your #'s. have you driven a xp yet? it changed my decision on building an sr1. the polaris is the most spec thing that you could want for a stock spec class. i predict the xp's stock class is gonna be huge and the sr1 will go to open rules , run what you want , no tech crying for this and that like it is now. let the frankensteins run in a mod class.
