Im building a 700r raptor that the stock wrist pin broke out of the piston. it took out the cylinder and crank. For a crank should we stay with oem or go to a stroker? if so what brands are good and who do we look out for? And we need a new cylinder, so for reliability do we want to go back to oem, or an aftermarket brand, ive seen cp. is there any others? we had already planned on a package from racers edge for porting and such. now we have an excuse to go bigger. the bike is used for wide open fire roads, pit riding and trail riding. ive been building mx 450 motors for a bit but have never looked into the big bore motors until now an with stroking an big bores the combos are endless.
heres some pics of the carnage!
(http://farm4.static.flickr.com/3021/3252031552_d1b8460e29.jpg)
(http://farm4.static.flickr.com/3052/3251210727_9419b53614.jpg)
(http://farm4.static.flickr.com/3525/3251213959_3015dff1ff.jpg)
(http://farm4.static.flickr.com/3373/3252042514_b5ab87134b.jpg)
(http://farm4.static.flickr.com/3342/3251216803_8aa93ce16e.jpg)
(http://farm4.static.flickr.com/3409/3251218065_8c0a0f69b5.jpg)
(http://farm4.static.flickr.com/3310/3252045024_801f6ec89c.jpg)
(http://farm4.static.flickr.com/3057/3251219983_dfb45c16e8.jpg)
That looks a lot like mine did in August.
Go with a Hotrods 5 mil stroker a lot of bang for the buck.
I would go with the hotrods +5mm crank,and high compression piston.This can all be done for a good price,I think i seen on raptor forum a 734cylinder and piston for $450.00 today. and a modded head with cam for cheap also :thumbs:
Wow, That thing is torn up :jaw:
id suggest a hotrod +5 crank and a stock cylinder. piston and cam are up to you but i havent liked what ive heard and read about the big bore kits. kds makes a really awesome cam and piston, and some of our sponsors like dl700 carry them. if trail is what you are riding the torque of a stroker crank is the way to go :grin_nod:
If you have time. I'd suggest shooting Bo (VelociRaptor) A PM. He can clean that thing up for you!!!! He does sleeving. So you could go back to the stock bore, or you could have a 105mm sleeve dropped in for you :) :) :thumbs: :thumbs: :thumbs:
so we nearly have this beast back together. +5 hotrods crank, je 11.5:1 stock bore, webcam 40c/932 grind, kibblewhite valves and spring kit, head porting, barker duals and pc3. I couldnt convince him to go with any intake for the time being so stock is what we got with a proflo kit. now maybe im not searching in the correct areas but ive looked thru pciii.raptorsource.com for a map somewhat close until we get to the dyno but have come up with nothing. can any one help a fella out. thanks!
Do you have the Throttle body bored?
no i dont.
should i?
I'd go with the plus 5 stroker crank :thumbs: . So far none of my customers mentioned anything bad about the +5.
www.kbmotorsportsonline.com
If I were you I would get the throttle body bored (maybe +3) and a intake (maybe fci), oh yeah and a custom map. Do you have a dyno anywhere near you?
yup were defintaly taking it to the dyno. and the owner is a little short on cash now after this build. but knowing him he will be longing for more power soon enough.
so i have the motor in and everything is hooked up. but she wont start. theres spark but i dont think the injector is working? the fuel pump turns on but theres nothing coming thru the injector. i checked all connections and i dont know whatsup now. im a bit lost.
My first suggestion. Would be try hooking up the stock plugs insted of the PCIII and see if the injector sprays.. If it does... There's something messed up w/ the PCIII.. If it doesn't you could have a plugged injector.
ok so the bike starts and runs with the pc3 unhooked.. as soon as we hook it back up no go.. the ground is connected to the starter relay the tps is hooked up the lights on pc3 do their thing but it wont send any fuel whats the deal.
I would double check your wiring hook up.. If my memory serves me correctly, there's 2 plugs that have the same kind of connection. Possible you have them reversed?
ok ill check it out again. thanks for the help !!
ok so i just thought i would try uploading a map to the pc3 and my lap top recognizes it but the pc3 software says unable to connect. i tried to reset the pc3 and it still does nothing. so maybe for some whack reason it decided to cop out on me?
and i did double an triple check all connections and they are good and where they are supposed to be.. :mad:
hmmmmm,
I would give Jamie @ FuelMotoUSA a call. 877-729-4754
see if he has any ideas. he's a straight shooter and very easy to deal with.
thanks krandall!
ill give him a call an see what he has to say
Just dont call dyno jet, they are no help at all.
Any word from Jamie?
i didnt get to speak with jamie but i talked to keith and he pretty much told me i had it hooked up wrong. so back to the shop tonight and hopefully get this :mad: running
you should try this then...
remove the pciii entirely.. you should be able to take the 9volt adapter. hook it up, and hook it up to your laptop w/ out issue.
if that doesn't work... sounds like it could be issues.
well keith was correct. i did have it hooked up wrong. the ground wire was hooked up to the starter relay instead of hte battery. i guess in the minute it took me to run from the computer back to the shop after lookin at the pictures on how to install i thought the 2 looked the same. and like you said krandall i hooked up the 9v to it an had a connection right away.
thanks for all thehelp in deciding which way to go with this beast, now time to go have some fun!
Excellent!!!! Glad to hear it ended up being something simple at least! :clap:
i know eh! its always the little simple things that get ya!
either way thanks again !
so back on the trouble wagon. lol
the bike is overheating. or it seems to be gettin quite hot an the coolant starts to leak out. we removed the thermostat thinkin it might have been bad or whatever. but not the case. is it possible something that there is a blockage somewhere in the system? the plug looks perfect so im pretty sure it not leaning itself out an gettin to hot.
im sure someone can help since you have helped with all my other questions!!
Quote from: 660limited on April 04, 2009, 09:43:18 AM
so back on the trouble wagon. lol
the bike is overheating. or it seems to be gettin quite hot an the coolant starts to leak out. we removed the thermostat thinkin it might have been bad or whatever. but not the case. is it possible something that there is a blockage somewhere in the system? the plug looks perfect so im pretty sure it not leaning itself out an gettin to hot.
im sure someone can help since you have helped with all my other questions!!
Give me a call as soon as you get a chance...... There is a good chance the head gasket never sealed up good.
where is the coolant leaks from?
i talked to kenny and we got it all sorted out. new head gasket on the way
boo to cometic!
so the fun never ends with this raptor :clap:
its been about 15-20 hours of riding since we have gotten the head gasket problem sorted out. on sunday while riding it she just stopped solid. great....
we get the head off last night an all we see is pure carnage. mind you not as bad as the first go. but still its ugly. i didnt have my camera to get pics but i will soon.
when i removed the exhaust a piece of a valve guide was broke off inside. right away i knew this was going to be bad. we got the tb off and there was a knick in the bore of that. again bad news... when we look inside of the head. 1 missing valve. when the head does come off. the piston had some nasty marks from the broken valve. i cant describe how bad this is looking with out pictures. but we need a new head, valves, and piston. the cylinder can be bored out and sleeved i hope.
i think it happened because of the first melt down. when one of the exhaust valves had bent the first time it slightly cracked the guide. and since then the crack has been gettin bigger an bigger. until kapow... i didnt replace the valves myself, i had a well known mechanic from our area do the port work. as well as replace the valves ,springs and cam. and i guess it was maybe a rush job and he had missed the slight crack in the guideand over time it let go. looking closely at the guide you can notice it being slightly darker near the bottom and more clean looking near the top of the break. so over time it had just had enough an broke.
pictures will follow soon!
:jaw: shitty man. how did it run prior to that? Nothing worse than riding along and it just dies.
it ran amazing. ive built some pretty fast 450's but this raptor was in a totally different ball park power wise.
dang, that sucks man :(
I'm lookin forward to the pics!!!
holy crap that sucks. Hope things work out to get it back together. If you were vip you would have had a chance to win a kds head last month. :thumbs:
Quote from: Socalrappy700 on June 10, 2009, 09:02:35 AM
holy crap that sucks. Hope things work out to get it back together. If you were vip you would have had a chance to win a kds head last month. :thumbs:
Shameless, just shameless :P
pix?
ill have pics later tonight. :'(
i know how everyone LOVES carnage. so here it is. :clap:
i removed that valve stem and pieces of a seat from the air box
(http://farm4.static.flickr.com/3557/3614676677_f9428809a9.jpg)
inside the tb
(http://farm3.static.flickr.com/2436/3615496500_50461b0e7c.jpg)
eeek
(http://farm4.static.flickr.com/3635/3615497284_57a86cf982.jpg)
im curious about the crack around the oil ring area
(http://farm4.static.flickr.com/3659/3614678583_80e31d502c.jpg)
lovely
(http://farm4.static.flickr.com/3598/3614679485_a9718a08d7.jpg)
(http://farm3.static.flickr.com/2426/3614680241_54ffacbda2.jpg)
this doesn't look right at all!!
(http://farm4.static.flickr.com/3611/3615500152_84fd4f2850.jpg)
you can see the knick where the valve hit on its way back thru
(http://farm4.static.flickr.com/3402/3614682231_8a8b9f897f.jpg)
one valve guide
(http://farm3.static.flickr.com/2470/3615502708_f96e4eecea.jpg)
no valve guide and which i believe is the culprit of this whole ordeal
(http://farm4.static.flickr.com/3558/3615503464_8acb344c1b.jpg)
and the final blow
(http://farm3.static.flickr.com/2114/3614686013_5bf32726f5.jpg)
i did take some pics of the port work before would something in the pics lead anyone to believe that the porter had something to do with this? or should have at least noticed a crack in the guide?
(http://farm3.static.flickr.com/2456/3614695477_a84d1205a1.jpg)
(http://farm4.static.flickr.com/3601/3614696513_0455b1085a.jpg)
Oh my Goodness! Nice carnage for sure. :(
Ive fixed simular carnage.
if you think that can be fixed. im sure we will be more then willing to send it your way!
Incredible shots dude. Sorry about the luck
Quote from: VelociRaptor on June 10, 2009, 07:53:31 PM
Ive fixed simular carnage.
You are the man BO!!! I woulda started shooting 12 gauge rounds at it hours ago :lol:
Sh@t'll buff out. How much for the piston?
Some Ive fixed looked like 12 guage rounds lol.
Send it on, Ill see what can be done with it.
damn man. :jaw:
Bo, you sir are the man!!!!!!
it is fixable. I don't think your builder would have seen this happening. The valve guide probably broke when the valves got bent after the intake broke.
The cylinder and head came in today, its burgered up pretty good lol.
The cylinder head is tore down. Looks like the intake valve broke right at the notch for were the locks go for the retainer.
yamaha had a problem with the 5valve engines doing that in the mid 90s
so the old beast finally runs again!!!
we ended up needing a new head and cylinder, everything else checked out fine tho.
we do need a map if anyone can shoot one over to me for the time. we are taking it to the dyno after a bit of beak in time.
mods are:
+5 crank
105mm cp 10.75:1
webcam 40c/932
ported head
pro design intake
barker duals
pc3
thanks for the help from the start guys :clap:
good to hear man!!!
Check with Alkire He has a similar build. +5 on a +5 :thumbs: :thumbs: :thumbs:
Let us know how she rips!