hot rods stroker crank question - Honda TRX Forums: Honda TRX 450R Forum

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Old 01-02-2010, 03:01 PM   #1 (permalink)
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well the crank on my 05 finally went so I think I'm gonna go with a hot rods +3mm stroker crank. I've heard a lot about them on here and I think it's a good idea. But I have a couple questions...

about how much hp will this add with a HCS3, an exhaust, and an intake as supporting mods?

does the crank come with the 2 crank bearings?

can you run this crank with the stock crank bearings?

which bearings are better quality?

if i'm running a stock piston is it necessary to have it balanced?

and what aftermarket pistons would be safe to run not having the crank balanced?

any help with these questions would be much appreciated!
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Old 01-02-2010, 03:09 PM   #2 (permalink)
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yes you can use oem bearings and i believe they are superior, but the crank doesn't come with them. it is not 100% necessary to balance the crank, but thats never a bad idea. the tolerances of the cranks make it impossible to guess which pistons will be "balanced" . some are better than others. i would guess 5-6 over stock with the mods you have listed, but then again all exhausts and intakes arent the same.
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Old 01-02-2010, 03:15 PM   #3 (permalink)
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about how much hp will this add with a HCS3, an exhaust, and an intake as supporting mods?

That one I have no idea, maybe someone else can chme in.

does the crank come with the 2 crank bearings?

No.

can you run this crank with the stock crank bearings?

Yes, I have run mine with OEM bearings and seals since day one.

which bearings are better quality?

I would run OEM, I have heard of some failures with the Hot Rods.

if i'm running a stock piston is it necessary to have it balanced?

No, see my responce below.

and what aftermarket pistons would be safe to run not having the crank balanced?

To be honest, you can run it with any aftermarket piston and not balance it. I have had my Hot Rods stoker crank installed in one of my 450r's for over two years and have not had any problems with it. I took it out of the box and installed it. I ran it for the first year with a stock bore Wiseco 11.5:1 piston, then since then I have been running it with a Cylinder Works big bore kit. I am sure some people will tell you you must ballance it, but from my experiance, I have not found it to be nessasary. (I bet my stoker crank as at least 150 hours on it.) If you have the extra money and time, by all means get it ballanced, but I do not think it is a "must do".

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Old 01-02-2010, 03:23 PM   #4 (permalink)
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i agree with doug, balancing isnt a must but if you got the money and time to wait for it then i would, mine is balanced and its really smooth its smoother than stock

i had 2 friends with stroker cranks that wasnt balanced (but these where in 06+ bikes) and 1 had a stock piston and the other had a venom 14:1 stockbore and they both vibrated noticeably more than stock

but again mine is a 04 so i dunno if the year models would change anything because they are 2 different cranks

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Old 01-02-2010, 03:37 PM   #5 (permalink)
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All great replies. The new HR crank comes with the thrust side collar, used with the
purchase of your choice (OEM Bearings). And a thrust side crank seal. This seal has
a larger I.D. Needed for the added diameter, on the crank end.
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Old 01-02-2010, 03:43 PM   #6 (permalink)
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thanks for all the fast and detailed responses guys! much appreciated
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Old 01-02-2010, 03:46 PM   #7 (permalink)
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Quote:
thanks for all the fast and detailed responses guys! much appreciated[/b]
one more quick question guys... is there a way to measure your stock timing chain to see if its stretched?
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Old 01-02-2010, 03:55 PM   #8 (permalink)
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For 40 bucks put a new one in...
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Old 01-02-2010, 05:23 PM   #9 (permalink)
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ya its pretty cheap and definitely a good idea to replace the timing chain. for future reference you could use a caliper to measure a series of links of a new chain. then, the next time you are in there you could remeasure and see how much stretch there is.
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Old 01-03-2010, 07:34 AM   #10 (permalink)
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for the most part, the 'stretch' of the timing chain is not nearly as predominate as this particular chain is more prone to KINK rather than stretch. If you can hold the chain in your hand and roll it around w/o noticing any KINKS in it, your probably good to do.... but then again.... $35 for a new one? is a no brainer.... but I have often reused my timing chain until which time it develops the typical 'kink' and then it's time for a new one....

the HR stroker crank, WAS, a hit or miss deal.....some guys put them in and they were as smooth as butter, others not so lucky and the crank caused some terrible vibrations..... bottom line was 'some were good, some were bad'.... so most chose to have them balanced before installation JUST to be SURE......

as for the piston.... any piston will work and does not need to be balanced to a thumper crank..... there are many posts on this issue....

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Old 01-03-2010, 11:18 AM   #11 (permalink)
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if it has any kinks in it replace it. I dont care for the hot rods stroker cranks I just had a buddy break another one in half. They have a problem with them an wont admit it. Save yourself the heartache and put an oem or a falicon in if your going to do it. btw thier bearing are junk as well.
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Old 01-06-2010, 09:40 AM   #12 (permalink)
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Quote:
if it has any kinks in it replace it. I dont care for the hot rods stroker cranks I just had a buddy break another one in half. They have a problem with them an wont admit it. Save yourself the heartache and put an oem or a falicon in if your going to do it. btw thier bearing are junk as well.[/b]










A single cylinder crankshaft tha has broken in half would certainly dictate a severe problem of some sort....and since you stated "another one"....which suggests it has happened twice,I would be extremely concerned with a heck of a lot more than the notion that the crank itself was to blame.

feel free to go through the stickied HR +3 thread....you will notice that the majority of us who run them are more than happy with the power/durability experienced with them.

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Old 01-06-2010, 12:36 PM   #13 (permalink)
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Quote:
Quote:
if it has any kinks in it replace it. I dont care for the hot rods stroker cranks I just had a buddy break another one in half. They have a problem with them an wont admit it. Save yourself the heartache and put an oem or a falicon in if your going to do it. btw thier bearing are junk as well.[/b]










A single cylinder crankshaft tha has broken in half would certainly dictate a severe problem of some sort....and since you stated "another one"....which suggests it has happened twice,I would be extremely concerned with a heck of a lot more than the notion that the crank itself was to blame.

feel free to go through the stickied HR +3 thread....you will notice that the majority of us who run them are more than happy with the power/durability experienced with them.
[/b]
^^ ^^
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