Installing CBR radiator

[sangheraent]

310 procross cylinder with a 4mm crank my radiator has some bent fins iv tried two different stock radiators and on two different motors I'm hovering around 200-220. My 265 stayed below 200 most of the time unless I really made it work hard.

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[Skeans1]

310 procross cylinder with a 4mm crank my radiator has some bent fins iv tried two different stock radiators and on two different motors I'm hovering around 200-220. My 265 stayed below 200 most of the time unless I really made it work hard.

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Does the head have the restriction holes like a stock head gasket?

[sangheraent]

Not sure it has o rings, no gasket and the procross cool head (cool head should fine a new name as we know that's all bs)

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[Skeans1]

Not sure it has o rings, no gasket and the procross cool head (cool head should fine a new name as we know that's all bs)

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I know like on a quadzilla they have a few issues with actually pulling the heat from the cylinder with a cool head.

[jcs003]

That's where I run mine, is at Winchester.  I haven't been to Florence yet.

If you fix your detonation issues, I would think your stock radiator should be more then plenty.

sounds like BDT cut you head.  check your combustion area and confirm you are using the correct octane.

john

[sangheraent]

actually the guy that built this motor was Pat at that sport shop in Reedsport. Did a terrible job on it, the bike became super fuel efficient was hitting Rev limiters all over the place, over heating issues, and best of all no power my 310 had less power then my 265. I called him like 10 times over a year and he gave me answers like "oh your running cr250 those don't work so good we have best results with stock ignitions"

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[Aceman]

It sounds like you need to save that money you want to spend on a radiator and put it towards a good motor builder who can get your engine fixed up right.  My 310, when it was still on the stock radiator did fine.  180-190 degrees if I remember right.  The only time it went over 200 was in snow when I had a lot of wheel spin but not a lot of speed with not much air flow through the radiator.

[sangheraent]

I did that already sent it to Kevin Herr of Herr jugs racing out in California. He built my old banshee and my rm250 both bikes I'm super happy with so I sent him my 250r. (Plus some builders didn't want to try to fix a hack job jug).

Bike runs awesome now tons more power all issues gone throttle super crisp. iv tested it around my house here haven't got over 180 but my area and the trails here aren't enough to over heat a bike so I never usually know until I get on the sand and by then it's too late and there goes a 5 day trip wasted.

So do I need a radiator maybe I don't know, however having one doesn't hurt and I don't have a money issue so nothing stopping me from buying one.

That is my thought process. Rather waste 400 on a radiator I don't need then have a trip I take once every year go to waste.  

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[Skeans1]

I did that already sent it to Kevin Herr of Herr jugs racing out in California. He built my old banshee and my rm250 both bikes I'm super happy with so I sent him my 250r. (Plus some builders didn't want to try to fix a hack job jug).

Bike runs awesome now tons more power all issues gone throttle super crisp. iv tested it around my house here haven't got over 180 but my area and the trails here aren't enough to over heat a bike so I never usually know until I get on the sand and by then it's too late and there goes a 5 day trip wasted.

So do I need a radiator maybe I don't know, however having one doesn't hurt and I don't have a money issue so nothing stopping me from buying one.

That is my thought process. Rather waste 400 on a radiator I don't need then have a trip I take once every year go to waste.  

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Even the big motors run just fine on a stock radiator as long as they are clean in and out without any build up.

[JesseA420]

id get a new radiator even if it is just one of those china jobbers. it might be the same size but at least its clean bare metal u never know how much corrosion is down inside the cores of your 30 yr old stocker.

[Aceman]

I understand.  I'm in the same boat, usually big trips far from home, so whatever I put together on the quad has to work or my trip may be ruined.  In that case, go for an aftermarket radiator, I did, and I haven't regretted it.  I haven't had a single issue with my Afco in the 6+ years I've had it.

[chief]

I understand.  I'm in the same boat, usually big trips far from home, so whatever I put together on the quad has to work or my trip may be ruined.  In that case, go for an aftermarket radiator, I did, and I haven't regretted it.  I haven't had a single issue with my Afco in the 6+ years I've had it.

                                                                                                                                                                                                         take big main jets run non oxygenated 110 for those tree shots. winchester will smoke more otherwise reliable engines than anywhere else.

[havinnoj]

Pat is the guy at #1 Stop Sports or whatever in Reedsport, yeah?  If so, I'd steer clear.  OCP in Winchester Bay would have / is a much better option.  

And to agree with the rest of this thread - stock radiator will work fine on that size motor in the Oregon Dunes.  Have ran stock ones (and aftermarket) on similar and bigger motors for years without issue.

take big main jets run non oxygenated 110 for those tree shots. winchester will smoke more otherwise reliable engines than anywhere else.

Care to elaborate on this statement?  I've been riding Winchester and the OR dunes for 15 years and never had issues..

[chief]

when conditions are right air quality, combined with extended wot can make winchester bay unique requiring larger main jets and good fuel to keep cool imho.

[Skeans1]

when conditions are right air quality, combined with extended wot can make winchester bay unique requiring larger main jets and good fuel to keep cool imho.

As long as you have enough fuel to make the pull in the bowl and jet is large enough not to lean the mixture it wouldn't matter where you are.