i am amazed how much better this machine works without the big bore kit...I do not know why anyone would put a big bore kit in for... I bought mine from my brother, he put a big bore kit in fall of 07 road it that winter no problems. Fall of 08 i buy it from him... being of december go to blue river first day it was good running good no problems.... second day got to the top of the mountain and the motor blows --- had to put brand new motor put in... piston skirt broke off and well the end
07 rev 800r
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tom29
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Whos big bore kit was it??
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DaveB
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So...to recap: a brand new motor runs better than a year old big bore that was ready to fall part. Gotcha. SHR is one of the good kits out there that has good technical support and a great track record. If your was running poorly then blew up, I would wager that your brother never got on the phone with Big John and sorted things out.
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no he talked to him quite abit .... i am not saying that it is a bad kit i am just say that the stock motor has more than enough power for me right now... i plan to put the kit back on once the warrenty is up in a year... it ran good for the day half that i got to ride it
tom29
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the reason why your Shr big bore kit doesnt work is cause there is NO porting in his big bores, just bored out and re-nickasilled therefore, wont make any more power than stock.
What did you have for a head on it???
What did you have for a head on it???
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it was a stock head that had been worked on.... not sure what was done for i did not buy it from him.... what a pain to put the cards and springs back to stock no one would help, i am still trying to get it back to stock... not even martin farm...
Terra Alps Racing inc.
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stock head doesnt work well with big bores
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DaveB
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Ralph at Split Second would beg to differ with you.
Terra Alps Racing inc.
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daveb, I have talked to ralph a few times, whatever he chooses to use for a head or design on his big bores is up to him.
after many dynos and tests on the hill at elevation I found what works best.
I seen your old 860 big bore and talk about head design, wow. and you felt it worked good with no porting.
we had a few different big bores at golden riding over the holidays and our kits the 830HO and 860r running pump gas, were beatin the competitions 860's and 880's
one of the other 860 kits was detonating all day running 50/50 race fuel. kinda sad. and misleading when alot claim big hp but don't show on the hills.
after many dynos and tests on the hill at elevation I found what works best.
I seen your old 860 big bore and talk about head design, wow. and you felt it worked good with no porting.
we had a few different big bores at golden riding over the holidays and our kits the 830HO and 860r running pump gas, were beatin the competitions 860's and 880's
one of the other 860 kits was detonating all day running 50/50 race fuel. kinda sad. and misleading when alot claim big hp but don't show on the hills.
DaveB
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There was a Cudney head on my old big bore.....and I sold that sled in good condition. It ran fine....but I never made any big claims regarding the performance other than to tell the new owner that "yes an 860 is in there" and "yes it runs nice"....which it did when I sold it. I always suspected the new owner of overheating the engine and/or running poor fuel in it. I offered to help out in the repairs and never heard back from him. But ya know....this is none of your business.
Split Second engines have proven themselves over and over in the hills. I don't think you should be second guessing a successful engine builder who has proven himself many times over the many years he has been in business. I don't want to take this down the road that SW has gone.....because I personally have no issues with you....but a word of advice: don't bad-mouth your competition....it looks bad on you. You don't hear RKT, BJ, Ralph, Al, Bill C. or anyone bad-mouth your work. Let your satisfied customers be your advertising.
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Were the other product developers there too or was it just a bunch of guys who claim to know how to tune a sled trying to run up and down the hill?Based on the statement of "one 860 detonating all day on a 50/50 blend..." I would probably say that whoever was running it should have put 100% race fuel in instead of trying to make it work on a 50/50 blend and possibly that they a) didn't know what they were doing or b) didn't do the compression calc for the alt and octane they were riding. Having the engine builder cut a head for 6000ft and then running it at 4500ft is usually a rookie mistake.
I don't think that you can make a claim of being able to run over the competitions 880's with an 830 without doing a fair head to head comparison with properly set up sleds. I have seen one of Al's well setup 880's run and IMO it would take a heck of an 830 to beat it.
Terra Alps Racing inc.
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your a funny guy dave. I'm sure we would get along just fine if you would get this grudge off your shoulder.
cudney head with different domes that were not cudney dome designs. what does that have to do with the topic anyways? I was refering to the dome design. which makes the power, the head matters to long pulls.
you sold the sled , so what? I don't give a sh7t what you did with it. or who bought it.
why are you bringing split second in the picture? are you trying to start something with ralphy now?
whos bad mouthing who? did I say anynames? in your posts you have brought everyone in this topic! LOL
you know in the biz I'm in, we hear alot of bs. from it seems everyone.
if someone heard something from another builder or whoever, well I'd be the first to hear about it. its kinda funny, but I don't give a damm, I'm still 3 months behind from the work load that came in last fall so I have no shortage of work, and still haven't took any on til this bunch is done. I guess that means something good.
I've seen just about every motor built come thru my shop but theres no need to say anything as the mountain proves it all.
Terra Alps Racing inc.
Active member
well modman , I would put any of my 830's against a 880, since your in calgary, and probably ride Golden which is close to you, I can hook you up with a couple locals there would take you and a couple buddies out for a tour and you can run one, and maybe you can bring out a 880 or a 860 if you know of some in your bunch that has one. my 830's run 13.5-1 comp with pump gas like all my big bores.
for the gathering over the holidays I would say it was 8-10 good buddies that get together every couple weeks or so for the last few years from sask, alberta and bc and ride for a long weekend. I've rode with the bunch of guys the last few years myself, so it was good to hear a couple of them buying motors from others to see if they had what it took to be king for a day. LOL.
I would say the set up from the other builders didn't know what they were doing. which seems to be the majority of it.
4500 -6000' ani't enough of difference, maybe 4500-9000'
pm me for a tour phone number.
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i did not want people to argue over which is better, i just wanted to tell about my second trip to the mountains... well it turned out to be very expensive trip haha... never buy a used sled from your brother hahaha
DaveB
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Look dude. YOU said: stock heads don't work on big bores. I happen to know Split Second reshapes and reuses the stock head with good results. There may be further small gain to be had from an aftermarket head, but cost-wise, the re-shaped head works. He's not the only engine builder that does this. So does Big John, so does Al....I think even Kelsey will re-do a stock head.
YOU brought up my old sled....not me. I'm glad you fixed it for the new owner. It was in the Sled Shed a couple of weeks ago getting fixed again. Your fault? Al's fault? My fault? Or maybe the new owner's fault?
You don't need to be so black and white. If you suggested (as Big John, Al, and Ralphy all do) that the stock head reshaped is an option when doing a big-bore...works fine, looks stealth....but the Cadillac way to go for another 300 bucks is an aftermarket head which can provide a more efficient combustion chamber design and more coolant volume in the head. But to just say: stock heads don't work on a big bore, is downright misleading. THAT was the point of my original response.
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As for your comment that shr has no porting you are wrong i found out from BJ and they are ported
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