My catch tank

[Pornstar]

check out my overflow tank on my 450 r, i just zip tyed it to radiator, so in tight stuff, if it boils it dosent bleed all over the ground,once you start movin again it sucks it back home. cut the pipe on a 45 angle so it dosnt suck to the bottom once cooler. you can get flash after market ones, but this is just a baby bottle with the travel cap on and a hole in it for the hose. Budget riding everybody. Also my bashplate is a carbon fibre kayak paddle i found and shaped to fit. ha

[fergie]

Sounds like a good idea.any pics?

[Pornstar]

not the best shot, all i got at the mo.

[evoetr]

not the best shot, all i got at the mo.

Man looks like a nasty dent in your head pipe ? Can't be good for it ? Push it out if you can get something down it.

Oh and not bad on the catch tank :)

[Bradz]

Looks like it will do the trick... good presence of mind using a baby bottle, at least the plastic will have a chance of keeping its shape..

[scott411]

we do trick little alloy ones, same theory,

http://www.mrmotorcycles.co.nz/product_info.php?products_id=1458

[secondfield]

Top idea Guy's - how are they attached to the core Scott?

[xen]

Good stuff, never got around to making one, mine doesn't seem to lose much coolant when boiling


Looks like it will do the trick... good presence of mind using a baby bottle, at least the plastic will have a chance of keeping its shape..

hahaha jt can tell you what happens when you use a normal bottle

[barty5]

Top idea Guy's - how are they attached to the core Scott?

cable ties

[secondfield]

Eh? those aluminum ones? hmmmm spose there would be little if no flex on them. Good shit.

[scott411]

you can cable tie them but they come with bolts that go though the fins, and cushions to protect the fins as well,

[secondfield]

Right, I thought they looked a bit like bolts there, dunno about that. The core is a wee bit flimsy for bolts maybe? the idea (of bolts) going through there somehow doesn't sit right with me. Maybe cable ties in some sort of clever arrangement would be the go with some thermal insulation tape between the bottle and the radiator core. If she boils in the snot the boiling coolant wont be stored hard up against the radiator possibly causing thermal buildup pushing heat back into the core?? dunno just a thought.

[Ride it till the red]

Right, I thought they looked a bit like bolts there, dunno about that. The core is a wee bit flimsy for bolts maybe? the idea (of bolts) going through there somehow doesn't sit right with me. Maybe cable ties in some sort of clever arrangement would be the go with some thermal insulation tape between the bottle and the radiator core. If she boils in the snot the boiling coolant wont be stored hard up against the radiator possibly causing thermal buildup pushing heat back into the core?? dunno just a thought.

The way you seem to boil em nothing will help ya! I think electric is the way for you :sick:

[secondfield]

Whatever ... when was the last? huh? haha

[Ride it till the red]

Whatever ... when was the last? huh? haha

Probably the last time you rode, when was that? huh?

And you call yourself a dirtbiker, pfft!

[Pornstar]

:girlfight:

[That Guy]

Right, I thought they looked a bit like bolts there, dunno about that. The core is a wee bit flimsy for bolts maybe? the idea (of bolts) going through there somehow doesn't sit right with me. Maybe cable ties in some sort of clever arrangement would be the go with some thermal insulation tape between the bottle and the radiator core. If she boils in the snot the boiling coolant wont be stored hard up against the radiator possibly causing thermal buildup pushing heat back into the core?? dunno just a thought.

I've got one on my RMZ450 from MR motorcycles - works a treat no problems at all.

[secondfield]

Probably the last time you rode, when was that? huh?

And you call yourself a dirtbiker, pfft!

haha go ride some logs and stop looking at your own roost :2guns:

[Pornstar]

Speaking of own roost, I always feel like mines not big enough, kinda like guys who wory about their other sizes , but with me its just the roost, its probably fine,but....:confused:

[Pornstar]

this may be of interest

[CRF119]

Great idea! But you can take it a bit further i think.

There is no reason why the frame cant be used as a catch can on the CRFs a small 3mm hole at the bottom of the main spar left or right side will work mint with no strenght loss. Ive herd of people filling the frame with fuel on the CRFs for eduro rides.

Any thoughts on this?

[laserracer]

I used a garden hose water filter that you can buy at bunnings i think it was $8.00 has a entry and exit spout at each and and is small enough to fit between the frame and radiator of my yz i will try and get pics i have had it on my bike for 12 months and its been great works really well... and you have to look really hard just to see it ..kinda looks like the one in the pic

[Sammikins]

Mean Maori mean... :msn-wink:

[Pornstar]

Makes the boil overs easier to deal with aye.

[B0000M]

Great idea! But you can take it a bit further i think.

There is no reason why the frame cant be used as a catch can on the CRFs a small 3mm hole at the bottom of the main spar left or right side will work mint with no strenght loss. Ive herd of people filling the frame with fuel on the CRFs for eduro rides.

Any thoughts on this?

go another step further again and fit some round fittings onto the frame, cycle the cooling system in through one side and out the other, adding another few litres to the whole system.... good luck making that overheat!

[secondfield]

Now we are 'cookin' :shifty:

[CRF119]

Remember we dont want to make it run to cold these bikes dont have a thermosat. Running to cold will do as much damage as to hot. Also the hotter you can safly run a combustion engine the more performance can be had.

Just dont want to boil

Good idea for the wires i think maybe not for a mx track.

Ive herd of mx teams blocking sections of radiators to bring engine temps up in cold parts of the world.

[scott411]

Ive herd of mx teams blocking sections of radiators to bring engine temps up in cold parts of the world.

James Stewart was doing this in the supercross series this year,

however in the outdoors most of the factory teams run oil coolers on their four strokes to combat extreme heat

[CRF119]

Can you get oil coolers for the CRFs? The YZF would be easy it has external oil lines

[scott411]

yes they plumb them in, have a look at close up pics of the factory connection crf250's and you can see them, i have not seen how they plumb them up to the crf's, have seen them on kxf's tho

[CRF119]

Very cool set up here hate to think of the price tag!

[Pornstar]

Oh man, no more of that 4 stroke palava for me, crf gone, EXC250 2t on the way,no more sleepless nights worrying about valves(not really) or flame outs, or boil overs, or oil coolers, or how many hours ive done on the oil. I feel liberated.:clap:

[camchain]

Very cool set up here hate to think of the price tag!
Looks weird but interesting with smaller diameter hoses. Any info on it?

Ha ha Pornstar, feeling of liberation can easily be deflated if you flatten your $600 expansion chamber on a log. Not all beer and skittles in 2-stroke land! Wait untill we have to start buying carbon credits lol.

[Pornstar]

Very true, its a bloody big pipe alright, still ive flattenedmy crf's pipe before,but still the engine is so less complicated, and sorted.:rolleyes:

[CRF119]

Na no info im going to ask my good friends at boyds to see if they can find me one and a price. Looks pretty trick!

Ive never had a problem with my CRF valves, But i too will be moving onto a 300ktm for my next bike i think. Just for the 2 stroke smell haha

[tommorth]

looks expensive oill coolers a good idea the extra volume cant hurt ether

[barty5]

Very cool set up here hate to think of the price tag!

that wouldnt be that hard for a radiator shop to make remove bottom tank cut in half across it add in extra length.
as for the core for the oil it will just be a simple tube threaded at both ends and cut and welded in place.
as for the hose the could be bought and made to length at greenlane speed shop

there wont be anything complicate inside the radiator as with a standard cars automatic g/box oil cooler. As for the extra amount of oil carried that would be minimal maybe a 100ml given the pipe diameter.

[camchain]

looks expensive oill coolers a good idea the extra volume cant hurt ether
Hah. I thought that was just some weird water pump hose setup. Think I'd rather run a separate oil cooler, why plumb into something that's already hot? Mate has added an oil cooler behind his front plate on Yamaha dry sump. Don't know where he got it from but it fits neatly around steering head.

[barty5]

Hah. I thought that was just some weird water pump hose setup. Think I'd rather run a separate oil cooler, why plumb into something that's already hot? Mate has added an oil cooler behind his front plate on Yamaha dry sump. Don't know where he got it from but it fits neatly around steering head.

cause your not trying to freeze the oil just cool it down a tad it the same method most car makers use on auto trans and in some cases engine oil coolers you would be surprised how much of a difference it can make seen it on some cars a good 20deg difference between top and bottom hoses on the coolant.

Some of the older XR use to have oil coolers set up on the steering head.

[scott411]

teh head set mounted oil cooler is most likely off a XR400, they had a tidy little unit mounted off the steering head,

for nz type conditions the oil cooler on modern four strokes is a bit of overkill, they run them in the US nationals as they run 35 minute motos is extreme heat, and at extreme pace, they do not bother running them in supercross as the xtreme heat does not build up,

no offence ment guys, but the money would be better spent on suspension setup or riding lessons, as no one on here can go that hard for that long, (me included)

[CRF119]

More looking at it for the wires or other silly tracks. Ive got suspension to go and im almost out of cool stuff to buy for my bike. Other then the new Zeta carbon range i saw the other day lol

[scott411]

oil heat is not normally a problem on the tracks like that is it?, i would think fluidyne bigger radators would be a better option than an oil cooler

[camchain]

I think with older air-cooled engines, oil played a big part in cooling and they had quite large volumes of oil. Just guessing here, but with the newer engines running such a small amount of oil (especially CRFs with separate gearbox/Btm end), doesn't seem like a lot a safety if any nasty overheat situation?

Pretty sure daffyd mentioned (on a wires thread) he had a rad cap with a temp sensor on it CRF119, at least you could keep an eye on temp with that. 10 minute break easiest solution of all. With slow, hard riding in bush/mud, radiator fan seems like a good place to start for some peace of mind, but can you even run one off a CR-R stator? Maybe just use a small battery & a switch, run total loss for those expeditions?

Interesting Scott & Barty, XR400 cooler sounds right. (Suddenly reminds me of seeing the first water-cooled YZ with its nifty little radiator up on the forks) Should have mentioned it's fitted to an air-cooled 500 beast, souped up/high comp & it can run pretty hot.

[barty5]

10 minute break cools things a bit but you have to remember that once the motor stops you get heat soak to everything so it wont take long to get back to the same temp it would need to be more like a 20 min break

[camchain]

10 minute break cools things a bit but you have to remember that once the motor stops you get heat soak to everything so it wont take long to get back to the same temp it would need to be more like a 20 min break
Yeah, I'm told it's not a good idea to kill engine on badly overheated bike. You get a sudden big heat spike (without coolant flowing). Even if you can't ride at a pace to get airflow, better to idle for a bit, then stop would you reckon?

[barty5]

Yeah, I'm told it's not a good idea to kill engine on badly overheated bike. You get a sudden big heat spike (without coolant flowing). Even if you can't ride at a pace to get airflow, better to idle for a bit, then stop would you reckon?

if its real hot yes at least it has some flow promlem is if you cant move they are normally boiling over anyway so if you keep it running it will just loose more coolant. Your better to stop it get unstuck as quick as pos and get moving agian even if it means turning round and going back (not one a trail ride where other are comin at you though)

[cheese]

a 6 inch PC fan only draws about 30ma I think, so a few would be ok to run of a small battery pack. Or just find a straight..... LOL

[B0000M]

a 6 inch PC fan only draws about 30ma I think, so a few would be ok to run of a small battery pack. Or just find a straight..... LOL

and push about 1l of air a minute lol

[CRF119]

If i ran PC fans id run 6v fans x4 on a 11.1v Lipoly battery pack would last all day and the 6v fans really hum on 11.1v :2thumbsup

You can get a stator kit to run lights for the CRF450Rs and im guessing all the other bikes. includes extra loom and a 3.7Ah NiMH Battery pack.

May as well just buy a spare CRF450X i think.

I havnt seen radiator caps with temp id be keen on one of them!

[dafydd roberts]

If i ran PC fans id run 6v fans x4 on a 11.1v Lipoly battery pack would last all day and the 6v fans really hum on 11.1v :2thumbsup

You can get a stator kit to run lights for the CRF450Rs and im guessing all the other bikes. includes extra loom and a 3.7Ah NiMH Battery pack.

May as well just buy a spare CRF450X i think.

I havnt seen radiator caps with temp id be keen on one of them!

http://www.offroadimports.co.nz/

Page 5 (Boyds can get them for you)

Really work well, but can steam up if you are on a constant boil all day.

[jt119]

http://www.offroadimports.co.nz/

Page 5 (Boyds can get them for you)

Really work well, but can steam up if you are on a constant boil all day.ya i got one of them thay work really well