Jump to content
Sign in to follow this  

IMS vs. Clarke vs. Acerbis '01 XR650R

Recommended Posts

For my 2001 XR650R

Searched around, and found some information, but I need a little more.

Looking at an after market tank, which works best? I plan to go with the red, and would like it to match the OEM color. I will be running a Scott's Damper, probably. Any clearance issues?

What range are you averaging with a 4.3 gal?

I have considered the seven gal behemoth from acerbis, though it looks too wide for my tastes. Though extra fuel is good, but adds weight. Yes I know you can run it low, so why not a smaller tank?

I've had natural colored tanks before, but I'm not racing so no need to check level, on the fly.

Pictures would be great!!!

Anxious to find out what the BRP heads are using, and what works.

Thanks,

Share this post


Link to post
Share on other sites

I have the 4.0g IMS on my bike. It's been great. Sorry no pics.

...sorry this isn't that much help, but it'll get you a bump

Share this post


Link to post
Share on other sites

Clarke:

The Clarke 4.3 has the best fit and finish of the aftermarket tanks. The color matches real well. The only drawback that the Clarke has is that it is a little wider through the middle than the IMS tank. The Clarke fuel tank also drops lower on the left side of the bike, thus the reserve volume of the tank is increased. It is a little more difficult to get to the choke lever with this tank.

IMS:

The IMS 4.6 is narrower through the midsection than the Clarke, but at the shrouds is about the same. The IMS is also a little taller, so if you are short and like to stand up alot, watch out for your two little friends.:cheers: The finish of the tank is more "raw" than the Clarke, however the plastic "blend" of the IMS seems a little more durable under race conditions (the plastic is also a little thicker). The IMS tank's (at least the 3.2) inserts for the fuel tank mounting brackets are also a smidge too far apart for the stock Honda tank brackets. The stock brackets fit fine when cold, but when the tank is full of fuel and expands a little, they will crack. You can either spend the money on the XR's Only billet mounts or slightly egg out the stock holes in the brackets with a dremel to allow for a little expansion room. If you're racing, the IMS 3.2 is narrower than the stock tank, at the expense of a height increase.

Acerbis:

I have not personally tried the Acerbis tank for the 650R, or even seen one. I will say though that I have not been impressed with past Acerbis tanks that I have seen. I have a friend of mine who has an Acerbis tank on his KTM 380MXC. That fuel cap leaks more gas than his bike uses!!! All of the Acerbis tanks that I have seen also have a small fuel filler hole. I can spill fuel out of my IMS tank from missing the hole or having the hose slip. I'd hate to think how much extra money BP can make off me having a smaller fill hole.

If you were even considering the Acerbis behemoth, I would go with the IMS 7.0 gallon instead.

As for range, my riding partner has had his Clarke 4.3 go BONE dry at 120 miles. This was doing a little dual-sport with some two-track thrown in. As you know, range has everything to do with your riding style. I can burn my IMS 3.2 dry in under 60 miles without even trying to hard in the desert, but I can run a stock tank to well over 70 when I am trail riding all day. I can take my younger brother out for a ride (with a KX250) and he'll be on fumes in 20 miles when he rides stupid. For a good desert ride, I would feel safe to say that 80-85 is a good representation of the range that you could get with a 4.3. But don't yell at me if you run out sooner!!

  • Like 2

Share this post


Link to post
Share on other sites

I had a Monnier tank (7.5 liters) on my 650, made by Acerbis. No leaks from the cap but it was hard to tighten.

The Acerbis, for what I know is big and modifies the way you stand on the bike. It has been studied for African tours and rallyes.

Share this post


Link to post
Share on other sites

I have been extremely happy with my Clarke 4.3 Gallon tank. Excellent color match, excellent fit, super quick shipping. (it usually gets me around 120-140 miles per tank) although, I usually ride 90% of the time commuting to & from work on the street.

Share this post


Link to post
Share on other sites

So which is best? It seems most racers use IMS, but many use the Clark in the private sector. Is it a style thing, or quality thing or??

Share this post


Link to post
Share on other sites

Racers use the IMS because they are thinner than the Clarke. The IMS tank is thinner than the stock tank! Easier seating/standing transition with the IMS. Especially as you can get the IMS in a 3.2 gallon and not the larger 4.3 Clarke. The 4.3 is typically overkill for a desert race.

Share this post


Link to post
Share on other sites

hi there. I have an '01 as well and bought an IMS 4.6 gal tank in red. It looks awesome, fits perfect and has lasted a year of riding with no issues. For the record I also have on oversize IMS for my '01 CR500 and have had it for over two years with no issues. They both fit perfectly out of the box.

Just my two cents.

Dave Huxley

Share this post


Link to post
Share on other sites
For my 2001 XR650R

Searched around, and found some information, but I need a little more.

Looking at an after market tank, which works best? I plan to go with the red, and would like it to match the OEM color. I will be running a Scott's Damper, probably. Any clearance issues?

What range are you averaging with a 4.3 gal?

I have considered the seven gal behemoth from acerbis, though it looks too wide for my tastes. Though extra fuel is good, but adds weight. Yes I know you can run it low, so why not a smaller tank?

I've had natural colored tanks before, but I'm not racing so no need to check level, on the fly.

Pictures would be great!!!

Anxious to find out what the BRP heads are using, and what works.

Thanks,

i have a clarke 4.3 and a a scotts damper that uses the oil fill mount. the tank does interfere with the mount just enough to be a pain in the ass. to change the oil i have to remove the tank.

  • Like 1

Share this post


Link to post
Share on other sites

Just out of curiosity, What does 50 pounds+ of fuel do to the handling? 7 gallons seems like alot of weight.

  • Like 1

Share this post


Link to post
Share on other sites

I run the clarke 4.3gal tank and love it. The fit is great...I can take the tank off and reinstall it w/ absolutely no problem at all. It has a tight gas cap that doesn't spill gas out.

Lets see what else..... range...i think the most I got out of it was about 140 :banghead: ...when on the highway cruising @ 70-75mph w/ 15X45 gearing you get about 120 miles. thats about it. any other questions, ask away.

garage.php?do=viewattachment&attachmentid=51345

garage.php?do=viewattachment&attachmentid=51202

Share this post


Link to post
Share on other sites

eastreich has already covered most of this, but I'd have to disagree about Acerbis quality. I've got a 3.3 gallon tank on my WR250F and their 6.whatever for my 650R. The fit and finish on both is excellent.

I had an IMS 4.6 gallon tank and not I have a 3.2 gallon IMS tank. I think I'll end up buying a Clark 4.3 gallon tank to use most of the time. They seem like the best balance between size/shape and fuel capacity.

Share this post


Link to post
Share on other sites
ktm620108.jpgthanksgivingride002.jpg I really like the Clarke 4.3! No issues with this tank. Dip stick is a little hard to get to but nothing major.
  • Like 1

Share this post


Link to post
Share on other sites

heres another clakre 4.3

If Clarke had a smaller one(like a 3.3) I would have gotten that but they don't

and IMS doesn't make a black one

P9070244.jpg

P9020216.jpg

Share this post


Link to post
Share on other sites

Here is a picture of my old bike with the Clarke 4.7 gallon tank. I loved it and couldn't do without because of the re jetted carb and the range it got with the stock tank which I could go through in 55 miles if I was heavy on the throttle!

I didn't ever noticed any side to side movement at all and I thought the fit and finish were great and was easy to install. Only down side was that I thought it made the bike a little more top heavy with all that fuel on top.

s5000175rh8.jpg

s5000175rh8.54542c89f8.jpg

Share this post


Link to post
Share on other sites

I have the Acerbis 6 gallon, with Scotts damper, no clearance problem. I fitted the tank myself, it's pretty simple.

The Acerbis is popular with middle east riders, for longest range possible without using a fuel pump. And that was my reasoning as well - I just wanted max range. My research told me that any bigger would need a fuel pump.

I hear the fuel pumps are pretty reliable but I just wanted simplicity, from tank to carb with no complication.

I ride mostly in desert dunes / soft sand as well as beach and firmer sand tracks.

Handling feels fine to me even with tank full - I didn't really notice a big change when changing from original tank to Acerbis.

Some people have recommended using that fuel-tank foam 'foam' to reduce fuel slosh - used in race cars and aviation industry. But I haven't felt the effect of the fuel weight. But I don't have another bike to compare with.

On an XRR I'd recommend adding a fork brace when using a big tank. Just makes the front end a bit stiffer.

Somebody mentioned the width of the acerbis - I don't have a problem with that either, and it seems like pretty good radiator protection (there is a steel brace between the bottom "lobes" of the tank and the frame.

By the way I've crashed the bike more times than I can count in the desert, the tank is strong.

Pics of the Acerbis from different angles:

garage-2b.jpg

bike-desert-smaller2.jpg

bike.jpg

IMG_0406.jpg

garage.jpg

IMG_0407b.jpg

IMG_0411b.jpg

IMG_0437.jpg

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

Sign in to follow this  

  • Similar Content

    • By fudgypup
      Garrett Poucher and Skyler Howes of Garrett Offroad Racing are headed to Dakar!  These US privateers are headed there for their first times but Skyler is fresh off a victory at last week's Baja Rally, won the Sonora Rally in March and this team placed third in the Baja 1000.

      They have a fundraising link set up and could use your help.
      I raced with Garrett at Baja Rally last year and then both of them at Sonora and was honored to pit with them as well.  They're both super guys and work their assess off.  I think they both have good chances of not only finishing the 11 days of Dakar but placing well.
      They're doing some rally training events this Sat, Oct 20 in Santa Clarita, CA and then another Oct 28th in St. George Utah so if you've ever considered learning rally raid navigation, this is your chance!  It's a lot of fun too.  More info on that at the link.
    • By photonicreno
      Hi all!

       I've got an issue, one of many when it comes to bikes. I searched throughout all the pages I could find pertaining to my situation and couldn't find very much useful information.
      So the issue is, the bike has no electric start.... until it's hot enough to melt steel that is. It will bump start first time every time. But I can sit and crank the starter over for ever and it'll never start until the charger is bumped up past 200 amps. Not good.

       The story so far,
      Got the bike for 1k cash. Guy said it has no spark and no second gear. This particular guy also only ever rode newer crotch rockets. Brought it home pulled the choke, attached battery charger and she fired right up. Ran like absolute crap, but oh well I figure it's an older bike with only 10k miles so it probably needs a good carb cleaning. Took the carb apart and didn't know I messed something up until way later(didn't tighten down main jet). Oh well she runs well enough if I can get her started. Moved from California to Oklahoma. Eventually found the money to fix 2nd gear, and as I am a certified Honda small engine technician apprentice I figured it would be no big deal. Completely tore down engine to it's roots replaced 2nd, and 5th gear(because 5th gear connects to 2nd on the countershaft) dogs were worn pretty badly on both. The engine looked quite good compared to most others I've seen. Put the engine back together as per the service manual. Did all the right steps including loosening the banjo bolts to test for proper oil pressure. I even tore apart the electric starter to clean the contacts and the brushes and replace the dielectric grease. Adjusted the valves as per the service manual, replaced all gaskets, o-rings, seals, and oil filter.
       Finally after about a month of waiting on parts and reassembly I get to start her, only she doesn't. Electric start is still giving me the same issues I've always had. So I replaced the Ignition coil, CDI box, and put a new battery in, plus the starter motor rebuild. Nothing. Still cranks forever. I said what the heck and tried to push it slightly down hill and bump start it, and voila... fired right up! Once she gets hot enough and the stator charges the battery enough it'll electric start... sometimes.
       So I looked towards ignition, used a tool called ignition mate. Pretty awesome tool if you can afford it. Well while cranking the ignition mate reads the spark plug is getting 1-4kw of "spark" every cycle, well it only fires after getting up past 5kw sometimes 6-8kw. And sometimes the ignition would be intermittent as in it wouldn't give any spark at all. I cycle the ignition and it seems to soft reset the bike as it will usually give it back spark. I tested this with the new and old CDI box, the old one would never spark. Ever. So I threw it in the trash. A month later I stil l can't figure it out.
       Is there something I'm missing?

      TL;DR
      Bike won't start using electric start only bump start before and after engine rebuild
      Electric start works after pushing the starter past about 200 cold cranking amps or when hot.



       
    • By GreenMT_Rider
      30 years ago I sold my beloved 1985 CR500. I was young and needed money for a car. I had a lot of fun on that bike and some of the best dirt bike memories were made on it. Out of all the bikes I've owned it's the only one I regret selling. I've had opportunities to buy a 85 cr500 before but never pulled the trigger figuring leave the fond memories in the past. Well today I couldn't pass up the bike any longer. I found me a nice project bike to take up some free winter time. The bike is all there and it runs but most importantly it was cheap. Not the prettiest but it's mine. With lots of money and time it shall be returned to it's former glory and be ready to make some new memories.

    • By Ktm520sxrider
      Ready to seal back up





    • By Big64N
      Good condition with a long list of high end upgrade parts.
      Rekluse EXP 3.0 with cover and slave
      EVO- Ellensburg suspension tuning for 6' 200# expert rider
      Fork bleeders
      Trail-tech map switch
      Moose 1-1/8 flex bar
      CYCRA probend bar guards
      SXS skid plate with linkage plate
      Clutch and water pump guards
      Frame guards
      Fastway Evolution III pegs
      SRT Pro Armor radiator and rear rotor guards
      Acerbic Front rotor guard
      TM designs chain guides
      DID race chain
      Renthal sprockets
      Gripper seat
      FMF F-bomb header
      Dirt Tricks timing chain tensioner
      Pro Wheel, wheels
      Tubliss front and rear
      New top end and valve adjustment 60 hours old
      Many more aftermarket parts as well as spare parts and service manuals included in the sale.  Willing to include 4 sets of tires with 80% tread left for full price.
      Great bike with plenty of life left and set up for anything from single track woods to wide open dessert.
      Can hang with any of the 450's but is much easier to handle in the tight woods.
      Priced to sell at $6000.00 
      Willing to consider reasonable offers but no trades or carry.
×