Author Topic: DR 650 FCR carb convertion (Read 2254 times)

Kykdaar · « **on:** August 14, 2015, 10:34:10 pm »

Got a FCR-MX 39 Carb to test fit to my bike before I decide to buy. Came off a YZF450 quad, so a bit of work required ala the well pulished MX Rob conversion. Has the air cut-off valve to reduce popping. Is a beautiful piece of kit.

It has a 146 main jet in. I cannot see what the pilot size is. I also cannot see the markings on the needle - hope it is a EPM.

Anyone else running this carb?

Jet specs? Were can I get jets in PTA?

Impressions?

grego · « **Reply #1 on:** August 15, 2015, 08:06:49 am »

Quote from: Kykdaar on August 14, 2015, 10:34:10 pm

Got a FCR-MX 39 Carb to test fit to my bike before I decide to buy. Came off a YZF450 quad, so a bit of work required ala the well pulished MX Rob conversion. Has the air cut-off valve to reduce popping. Is a beautiful piece of kit.

It has a 146 main jet in. I cannot see what the pilot size is. I also cannot see the markings on the needle - hope it is a EPM.

Anyone else running this carb?

Jet specs? Were can I get jets in PTA?

Impressions?

contact Andrew from mcomp.co.za in durban for jets and parts.
best pricing and excellent service.

StuartC · « **Reply #2 on:** August 15, 2015, 08:40:10 am »

I think I have a 150 main in mine, stock YZf needle

Kykdaar · « **Reply #3 on:** August 15, 2015, 08:53:11 am »

Thanks gents

Kykdaar · « **Reply #4 on:** August 16, 2015, 08:18:12 am »

Playing around with the carb at present.

Test fitted it on the bike and it started right up.

Need to sort out some gaskets though as it leaks on the main body

Kykdaar · « **Reply #5 on:** August 16, 2015, 08:44:14 am »

The FCR-MX is a split body carb.

So the bad news here is that somebody previously split the body for some reason and, unfortunately, removed the gaskets that was there.

The problem with this is that Keihin do not sell that rubber gasket with any of their repair kits for the carb. In other words - not user servicable.

It does seem, however, that JD Jetting has made the necessary mid-body gasket seal due to the demand for it - http://www.jdjetting.com/xcart/product.php?productid=132

chopperpilot · « **Reply #6 on:** August 16, 2015, 03:14:31 pm »

Kykdaar

As mentioned, I have the non-MX FCR 39, as found on the DRZ 400 E. The one with the slanted body.

I have also read up quite a bit on the FCR carbs, and will be following your thread with interest.

Would also appreciate a comparison between your, Stuart's and Matie's DR, who has a stock, but modified BST carb?

How did you make the inlet and outlet carb adapters for the FCR?

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Kykdaar · « **Reply #7 on:** August 16, 2015, 04:26:14 pm »

Quote from: chopperpilot on August 16, 2015, 03:14:31 pm

Kykdaar

As mentioned, I have the non-MX FCR 39, as found on the DRZ 400 E. The one with the slanted body.

I have also read up quite a bit on the FCR carbs, and will be following your thread with interest.

Would also appreciate a comparison between your, Stuart's and Matie's DR, who has a stock, but modified BST carb?

How did you make the inlet and outlet carb adapters for the FCR?

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The carb belong to Pielas and he was kind enough to let me fool around with it a bit. He had the air horn step-up machined here in PTA and the guy did a great job. The front of the carb fits into the cylinder boot without any need for modification. The carb fits nicely and, was it not for the missing gasket, I would have been able to run it on the DR.

I sripped and cleaned the carb and had a chance to really look the FCR-MX over. I think it is a great carb - streets ahead of the BST in terms of quality and features.

I gave it back to Pielas today as I have to reasemble the DR.

chopperpilot · « **Reply #8 on:** August 16, 2015, 05:32:19 pm »

Thanks Kykdaar!

Will you be ordering the gasket, to further experiment with the FCR on the DR?

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Kykdaar · « **Reply #9 on:** August 16, 2015, 05:51:38 pm »

Quote from: chopperpilot on August 16, 2015, 05:32:19 pm

Thanks Kykdaar!

Will you be ordering the gasket, to further experiment with the FCR on the DR?

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Pielas wrote to them today. He looks keen to fix the carb up and fit it to his DR. Hopefully they have stock and will ship to SA.

At least I cleaned and trouble-shooted the carb for him which is very satisfying for my OCD tendencies

chopperpilot · « **Reply #10 on:** August 16, 2015, 06:21:46 pm »

Quote from: Kykdaar on August 16, 2015, 05:51:38 pm

Quote from: chopperpilot on August 16, 2015, 05:32:19 pm
Thanks Kykdaar!

Will you be ordering the gasket, to further experiment with the FCR on the DR?

Sent from my iPad using Tapatalk

Pielas wrote to them today. He looks keen to fix the carb up and fit it to his DR. Hopefully they have stock and will ship to SA.

At least I cleaned and trouble-shooted the carb for him which is very satisfying for my OCD tendencies

Sure you were rewarded with a cold one for your effort!

You sure are a busy man!

Slight hi-jack. Bash plate is nearly done. Terence was going to bring my DR back Friday afternoon, then discovered a slight misalignment when fitting it. Should be done this week. I'll remind him about the TE 610 hardware!

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Kykdaar · « **Reply #11 on:** August 16, 2015, 06:36:11 pm »

That is good news, thanks for the update

Just check with him whether the SM and TE mounting hardware is the same - it should be, but you never know.

Fooling around with the carbs this weekend actually turned out to be a blessing as I discovered that one of my throttle cables was nearly totally severed - only hanging on by a single strand

Better making that discovery in the garage than in the bush.

chopperpilot · « **Reply #12 on:** August 16, 2015, 07:06:16 pm »

Confirm the TE bash plate will be fitted to the SM?

If the frames are different, then I should cancel the hardware?

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Kykdaar · « **Reply #13 on:** August 16, 2015, 07:35:21 pm »

I have a SM bashplate so need the SM hardware.

Mike also wants a set of fittings for his TE.

chopperpilot · « **Reply #14 on:** August 16, 2015, 10:13:28 pm »

Quote from: Kykdaar on August 16, 2015, 07:35:21 pm

I have a SM bashplate so need the SM hardware.

Mike also wants a set of fittings for his TE.

One set of fittings for a SM bashplate, and one set fittings for a TE Hyde bash plate?

I misunderstood you, but will contact Terence tomorrow. Most probably identical kits anyway!

Cheers!

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Kykdaar · « **Reply #15 on:** August 17, 2015, 07:31:40 am »

Quote from: chopperpilot on August 16, 2015, 10:13:28 pm

Quote from: Kykdaar on August 16, 2015, 07:35:21 pm
I have a SM bashplate so need the SM hardware.

Mike also wants a set of fittings for his TE.
One set of fittings for a SM bashplate, and one set fittings for a TE Hyde bash plate?

I misunderstood you, but will contact Terence tomorrow. Most probably identical kits anyway!

Cheers!

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Thanks and yes, chances are that they will be the same

chopperpilot · « **Reply #16 on:** August 17, 2015, 09:28:49 am »

Great!

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chopperpilot · « **Reply #17 on:** August 17, 2015, 04:16:10 pm »

Request corrected for the bash plate mounting kits.👍

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Kykdaar · « **Reply #18 on:** August 17, 2015, 06:11:21 pm »

Quote from: chopperpilot on August 17, 2015, 04:16:10 pm

Request corrected for the bash plate mounting kits.👍

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Thanks man, much appreciated

sidetrack · « **Reply #19 on:** August 22, 2015, 07:11:07 pm »

What is the consesnsus of a MX FCR vs a slanted body FCR ?