Rk tek 858 kit not working.. Det 7 code

[geo]

The other important thing about the squish measurement is the angle. Piston crowns may be different (just sayin'). I found this to be true when comparing my MNTK pistons to stock Poo.
The squish measurement should diverge (become greater) from the cylinder wall to the center. Without a least a degree difference you will have problems. Especially with too large a squish clearance.
2.5 thou. per 100 thou of squish band width is what I consider a minimum (abit more than a degree) to 3.25 thou max IMO with the larger clearances you need to run on OEM stuff (the rest of the motor).

The other thing, IMO you can not find a pump fuel in BC today that will be trouble free above 135psi cranking pressure. That's MO but I played with this for a few years including last year with this Poo. My Cat's were a little more forgiving but I rarely took them over 8000 rpm. My Pro needs to run a little higher.
At 145 last year I had to overweight the clutching to stop det (just with head and pipe)(until 6000`which leave`s out too much good riding in BC lol). This added heat (belt) and lost performance for me.
This year (porting, pipe, head, MNTK kit) I set my domes to 58 and 140 to start and had both det and poor performance lol. So poor snow and my attitude lol forced me to try again.
52 squish and 135 and it made a world of difference on my Pro with BC fuel. No det, good powerband, and never signs off on the top, on my package. These are finiky little motors.

It would be very interesting to find out from your dealer what these measurements are.

 

[voodoo]

Thanks guys for last 2 comments, What is the squish?? How do I check that? Just soooooooo frustrating as I am not very mechanically inclined , we were told just bolt on new kit thats it... Never again I like pull and go! But I have been told when this kit is running proper it really is a big difference . Sorry to hear about your pistons Rydningen... How do you like you 858 now with new pistons etc?

Herein lies the problem. There is no such thing as bolt and go. If you want that ride it stock. I've seen 100 guys do what you are doing and end up disappointed. If you want to become a rider of a tuned performance sled you now have the opportunity to learn like the rest of us have. Whatever is wrong can be fixed, believe me I've spent countle$$ thousands learning. I too have throuwn up my arms and said F-it, I'm done. If you get it figured out you'll probably love this sled.

 

[jeepin270]

Herein lies the problem. There is no such thing as bolt and go. If you want that ride it stock. I've seen 100 guys do what you are doing and end up disappointed. If you want to become a rider of a tuned performance sled you now have the opportunity to learn like the rest of us have. Whatever is wrong can be fixed, believe me I've spent countle$$ thousands learning. I too have throuwn up my arms and said F-it, I'm done. If you get it figured out you'll probably love this sled.

Most of these aftermarket companies advertise, pull and go. No other modifications required.... When you choose the right aftermarket company, the pull and go usually holds true but 9 times outa 10, that company isn't gonna be offering the cheapest kit.

 

[beamslayer]

Load it up and head south . Call Kelsey and get it running right .

 

[zx7thrills]

Problem with Kelsey , he told my friend you just bolt on the kit and thats it... We were on the fence about doing this kit as some other pals were riding m8 turbos few years back and they were never dialed in perfect or even close to perfect. we dont want to be tinkering with these 858 kits at all and were re assured we wouldnt other than dial in boondocker box....Im surprised all the kits Kelsey sells he has never seen this det 7 retard mode. I mean i know hes trying to sell as many kits as he can but i am very frustrated and im into this kit with clutch plus in shop 3 x for close to 6k now, and than if I had to get my sled to Kelsey etc and back... Like i said and im not kidding id rather just unload it for 8k or give to someone that can fix it but that will b another bill....Maybe Kelsey will see these posts and show up with a trailer and take back and fix and than drop off when its fixed... Id even pay him...... But I doubt that will happen, almost 5000 views now, do the right thing Kelsey ...P.s of course i know there would be some tinkering on mod sleds but mine isn't tinkering , i cant even get mine out of parking lot.

 

[beamslayer]

Did you guys swap ecu out , check fuel resistors ?

 

[zx7thrills]

not yet... its going to dealer today ill get them to test

 

[zx7thrills]

Well sleds back in the shop. Sucks cause its just dumping here now. Just thought id let you guys know lol Kelsey did not come and grab my sled if anyone was curious. My friend does have his kit almost dialed in though he said, hes pulling weight out of clutching think hes at 66 grams now he said yesterday ran 9 out of 10 so once dialed in its a huge difference, im looking forward one day of just getting out of the parking lot without the set 7 code going off making it un rideable.

 

[rmk727]

Hope you found the prob , but in the future, you have friends, get together and swap ecu's swap det sensors and down the list, even heads plus I didn't notice if you tried race gas mix. Simple little things that cost less than a trip to dealer, but even so how could he let you have it back without fixing, doesn't he test ride units? Good luck

 

[zx7thrills]

Also I want to thank JKINZER for the new clutch set up etc. Mackay Marine says he really really found it useful your conversation the other day.. Thanks for the help, nice to see people standing behind there product ..