465 Stroker kits

[oynot400]

After reading some of the other posts about stroker cracks. I am starting to think real hard about getting one. I was going to call For Dirt Only, but I have been way too busy at work to get a chance to call. I talked to my engine builder to ask his opinion. He said that there are some kits out there that would put too much pressure on the thrust side of the piston. That and it may need a spacer plate between the head and jug. He was going to check with Powroll and see what could be done.
I am sure that this will give it more torque, but will it rev faster? Will I be able to keep the compression down below 11:1 so I don't have to use race fuel?
Are there any other questions I should ask before doing this. :confused:

[worm]

w/ a longe stroke it should have more torque but will rev slower...

[Ricky g]

My 465 big bore stroker runs flawless, 440 kit with a 4mm stroked crank, headwork, carb and pipe, it's the best quad I've ever owned, I'm a thumper rider for life, you will need to run race gas with a stroker, no big deal, I will gladly pay for race gas to get this much performance.

Ricky g

[oynot400]

Ricky,
Who did you get the kit from? Can you tell me how much more power compaired to a built 440? I got all the other motor mods done, all I would need is the crank, rod and piston.
Thanks :D

[Ricky g]

Originally posted by oynot400
Ricky,
Who did you get the kit from? Can you tell me how much more power compaired to a built 440? I got all the other motor mods done, all I would need is the crank, rod and piston.
Thanks :D

I had my motor work done local, the mods were done in stages, first was a pipe, rev limiter, carb rejeting, then came the 440 kit, then porting, bigger valves, springs, valve guides, hardend rockers, fcr carb, web cam, the stroked crank was put in twoards the end, you'll luv your 400 with a stroker, big noticable difference in power, I'd go with the 6mm, I had the 4mm done before they were doing the 6mm, I want to ride everyday, modded 400's kick ***, nuthin' like the feeling of thumpa power.

[Claas900]

....Hi,guys well i dont know if i would go with a stroker,it will rev slower,i know Sparks offers a 465 thats pure bore,its a 92mm,when a 440 is a 89 and a 435 is a 88.5 witch is what most ppl have but they just call it a 440(i might be wrong here tho?)Plus to 400 head is a 4 vavle head,its flows good,so the bigger bore will like that,but then again a strocker will have more tork,so you can bog the motor a little,or be a gear to high and still pull out of it.But with the Sparks they will bore the cases cuzz the cylinder is think the hole way threw. So i dunno,just my 2cents...hope i helped ..Thanks

[oynot400]

Ricky, it sounds like you did it like I am doing. Pipe, 440, carb then stroker. I did not know that they offered a 6mm stoke. :huh Did your local guy stroke it for you? Also, did you put in a different connecting rod or was that part of the kit? I am still trying to figure out why you would need race gas with a stoked engine? If you compression has not changed then why the need for the other fuel? The cost of the fuel is not the problem, when we go to the Little Sahara or trail riding in Wisconsin when there is not that type of fuel available becomes the problem.
By doing that, do you feel the need to get a longer swing arm? By stroking the engine it has to give is a ton more torque, I am afraind that it would want to come over backwards.
Thanks for the info.:devil

[FullBore52]

Yessirree they make a 6mm crank. Even a 7mm from FST. I've got the 6mm and mine REALLY wants to go over backwards...but my case may be a little different than yours (more compression maybe). Whatever you do you will like it.

Ricky your (465) is not a 465 it is a 460. a 465 is a 426 bore with 6mm stroke. (465stroker) on this web site had tc build one for him to rum on pump gas. All of the ones that FDO has built run on race gas. I have been on 465's with no head work and their power is ungodly smooth with power all over.
If you are going to call For Dirt Only it is better to call in the evening.


nathan

[K_Fulk]

www.powroll.com/honda_trx_400ex.htm

Check out the heavy duty rod. I had my carnck and rod back from them oce but a gear on the crank was messed up and sent it back. It will be a 460 with the 440 bore im also gonna run 13:1 comp. and bigger valves. Too bad i'll have tp wait till i get another 400 to use the motor.

I know that the 465 kit has lots of top end but I wondering if it still revs quicke. I know it will not rev as quick as the 416 or 440 but will it still rev relitivly quick. And who would u suggest going with the 465 kit

[oynot400]

Well I talked with both Powroll and For Dirt Only yesterday. I was very impressed with Mark or Marty ( I can't remember his name). He recommended a 426 bore with his 7mm stroked crank. Everything that he said made sence. We talked about rod to stroke ratio's, gapless rings, everything. If I do what he recommended I would have one reliable, hard running, 50 hp, 463 machines around. He said that one of his engines won at Ft Dodge last month. I am a little concerned about the 13:1 compression, but he said that I can have the piston machined down to drop to 12 or 11:1 if I want. He did not recommend going under 11:1, he said I would lose too much power by doing that.
He has me all excited about this project! :macho I will let know what I do next. Thanks GNCCer :D

[Dave400ex]

Does For Dirt Only have a Web Site?

[oynot400]

No they don't, but he was talking last night that he wants to get one. :)

[Dave400ex]

Yeah that would be Cool. GNCCer what all is done in your 426? Like Piston, Cam, Rockers, Springs, Porting, Carb?

JE 13-1 ported, bigger vaules, titanium springs, web cam, hardened rockers, removed choke, eight plated clutch, maybe more can't remember.

nathan

[Dave400ex]

How much did the whole Motor Work cost? Also what is done to your Clutch and how much was that?

[oynot400]

How is the 13:1 compression. To tell the truth I am a little nervous about running that high of compression, may be it will be alright I don't know. He did tell me that the piston can be machined down if I want it lower. Then again I want to try it. :devil
I left him a message today so I hope to hear from him tonight. Is his name Mark or Marty? I hate not remembering names. :mad:
I talked with my engine guy and everything they said he agreed with. He said that this would be the kit to go with! He also warned me that it will not be a trail bike no more. My response was, "The power hunger hit, and only a stroker kit can satisfy!"

as far as the 13-1 we just put it in i had been running a 11-1 so i haven't rode the new piston yet. the clutch is 8 250r fiber plates 7 300ex steel plates new springs and something grooved to help with oil flow. i am not sure exactly how much the motor cost i didn't have it done all at the same time? Call Mike at FDO he will be more than happy to give you prices on everything. oynot400 the guys name is mike, and you will have tons of smooth power all over the powerband and you can still ride trails. you will just want to got faster all the time.

nathan

[Dave400ex]

For my Motor I was thinking a 416/426 Piston, Cross Country type Cam, Valve Springs, Harden Rockers, and that was about it. What else would be good to get?

warriorman i would deffinatly get a clutch kit also.

[Dave400ex]

Ok I think I will call FDO and talk to them. They seem to be really good. What is the number again? lol How does your Motor compare to say a TC built or Sparks built 416, 425/426, or 440? Thanks a lot

Also what GNCC class do you run? 4 Stroke Modified?

yes i race 4stk mod. My motor as a 426 with 11-1 and stock carb easily out runs my buddies duncan 440 national kit. the others i am not exactly sure on. I have never had another ex out run in any open section in any race.

[Dave400ex]

Man there is some killer 400`s in that Class. 465Stroker`s 465. If your 426 is keeping up with them I would love to have that Motor! I`m not sure what Compression I would run. I don`t want this thing to not be reliable. TC says to stay with the stock carb and I know Duncan says too also for the woods because it has the best Torque and power down Low. I am really liking this. I wonder if the TC Pipe would be good for this Motor?

465stroker out front on red bike
me on white bike
black one has LRD 460
orange behind me is a 500 the same as devol's

[Sleeping Catfish]

Originally posted by GNCCer
465stroker out front on red bike
me on white bike
black one has LRD 460
orange behind me is a 500 the same as devol's

do those cannondales every get the holeshot? i hear they take a while to start and they are always last out of the first turn on tv. seems like the beefed up started would have let them start faster.

[Dave400ex]

That is awesome a 426 is up front like that. I am going to call FDO for sure.

The CDales do take a while to start but some are still up there.

[465Stroker]

GNCCer - I pulled 3 holeshots with that motor this year - Stock bore 11:1 Wiseco piston, TC XC Cam, TC Pipe, Stock Carb w/o choke plate. Now if I can only keep the lead :D
The 465 starts a little slower but makes up a ton of yardage when the tires stop spinning after you click into 3rd gear.
RC

[oynot400]

After talking with Mike at FDO I am definatly going with his kit. He told me about a guy that might have a crank that I can get. I hate playing phone tag. :grr
I plan on tearing my apart next month sometime after the race season is over with. :devil

[dhines]

Hey 465Stroker,

I'm a little confused. I know you have a stroker on your machine but you said it has "Stock bore 11:1 Wiseco piston." How does that work? Also, who did your engine and are you still just running 11:1?

Best,

Dennis

at that race he did not have a the stroker motor in the quad yet. he was running the stock bore motor until the stroker was finish. at least i believe that is what he told me.

[oynot400]

GNCCer, I forgot to ask Mike. What kind of turn around time does he have? Granted, I am sure that some times of the year are busier than others.

[Dave400ex]

I thought 465Stroker ran the 425 Piston with XC Cam and Pipe?

[465Stroker]

I ran the stock bore motor for rounds 12 thru 13 last year and 1 thru 8 this year while going over the 465 from top to bottom. I then put the 465 in for Wisp round 9.
I ran the 465 all of last year with no trouble - except for the right side case developed a small crack at the counter balancer after round 11. The 465 is a 1999 motor - so the casting may bave been flawed or have become week from countless hours of racing for 2 years.
Other than that - it's a very reliable motor built by TC Racing.
Motor: 88 mm 10:5 - 1 Wiseco piston, 6mm crank, TC XC Cam, Stock: porting, valve springs, valves, rockers, and clutch components.

[dhines]

Stroker,

I got you. Sounds like a good setup. How do you like that XC cam? I'm running a very similar setup to your non-stroked engine and I tried running a GT Thunder cam earlier this year and while the gains on mid and top were great, it just lost too much bottom end power for me (XC racing). How does the TC perform?

Dennis

[Dave400ex]

My advice is to call Tom at TC. He will tell you everything you need to know. I talked to him not to long ago and he told me to run the Wiseco 425 Piston 10.5:1, XC Cam, and his Pipe. Everything else he said to leave Stock even the Carb. I asked him what I would do if I wanted more Power after that Setup and he said then we would look in to a Carb.

465Stroker, If you read the thread "Hotcams" there are some questions about Valve Springs and Rockers. All of the Guys told me to get both of those things but yet if you ask Tom about them he says there is no need for them. What do you think?

oynot it will take a little longer being a stroker kit. there is alot of time involved in one. includeing stroking the crank. i would say between 3 to 5 weeks

[465Stroker]

dhines - I really cannot help you there - I have never used any other cams but TC's stuff.
Warriorman - I read the posts and really cannot comment on what is being said. The only thing I ever did was put in brand new stock rockers with a brand new cam with no troubles.
TC builds both of his MX and XC motors for torque - which have traditionally lower RPM's than most engine builders. I know TC even has a drop in MX cam that uses stock valves / springs.
RC

[Dave400ex]

Darn it I guess I will just have to call and talk to Tom again some time. lol. I may ask about just getting some Valve Springs. At least Tom isn`t making Guys pay a arm and a leg to get a Motor built.

Also what kind of Oil and what Weight are you Running?