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Search: Posts Made By: motolab
Forum: Thumpers Yesterday, 10:33 PM
Replies: 55
Views: 1,760
Posted By motolab
Keeping the BST40 was the right choice for...

Keeping the BST40 was the right choice for several reasons.I'm sure the mixture on the main was reasonable with the snorkel in place.The easiest "something" that should be done with low flow head...
Forum: Vendors Yesterday, 09:42 PM
Replies: 77
Views: 18,700
Posted By motolab
How many miles were there on the carburetor?You...

How many miles were there on the carburetor?You must mean Vise-Grips.I would not recommend that method. Instead, I recommend the use of a machine vise (without serrated jaws) to hold the hose barb. ...
Forum: Thumpers 07-23-2014, 10:02 PM
Replies: 55
Views: 1,760
Posted By motolab
You should not need a new 583.36.024.000 unless...

You should not need a new 583.36.024.000 unless you are unable to remove the one you already have from your old cylinder head.

Regards,

Derek
Forum: Thumpers 07-23-2014, 09:37 AM
Replies: 55
Views: 1,760
Posted By motolab
The stock main jet will be too lean for your...

The stock main jet will be too lean for your setup.I'm glad you are happy with the way the engine runs, but as I said, the stock main jet will be too small for having removed the snorkel and...
Forum: Thumpers 07-22-2014, 10:02 AM
Replies: 55
Views: 1,760
Posted By motolab
I don't recommend it.As far as I know, they...

I don't recommend it.As far as I know, they don't.It is possible that the 584-V03/1 cam has lift, duration, lobe centers and/or overlap that help reduce detonation (or are different in some other...
Forum: Thumpers 07-22-2014, 08:53 AM
Replies: 55
Views: 1,760
Posted By motolab
Yes.Not significantly.This should be a top...

Yes.Not significantly.This should be a top priority. The pre-muffler is also a problem.More exhaust flow helps get the heat out of the combustion chamber. Of course if the exhaust system is too...
Forum: Thumpers 07-21-2014, 08:10 PM
Replies: 55
Views: 1,760
Posted By motolab
The item installed in the pictured head is a...

The item installed in the pictured head is a 583.36.024.000.I'm not surprised.

Regards,

Derek
Forum: Thumpers 07-21-2014, 07:57 PM
Replies: 55
Views: 1,760
Posted By motolab
Correct.Yes. For proper sealing, heat transfer to...

Correct.Yes. For proper sealing, heat transfer to the head, and wear pattern, the face of the valve must start out flat when mated with a fresh seat.It means that the outsides of the inner coils are...
Forum: Thumpers 07-21-2014, 07:03 PM
Replies: 12
Views: 344
Posted By motolab
At 25K miles, the slide guide, slide and emulsion...

At 25K miles, the slide guide, slide and emulsion tube are likely to be worn out.

There are six depressions in the face of the slide guide. Four of these are round. If the round ones are no...
Forum: Thumpers 07-21-2014, 04:04 PM
Replies: 12
Views: 344
Posted By motolab
How many miles are there on the carburetor? ...

How many miles are there on the carburetor?

Have there been any modifications such as slide drilling or slide spring clipping?

What does the under-diaphragm vent filtration consist of?
...
Forum: Thumpers 07-21-2014, 04:01 PM
Replies: 12
Views: 344
Posted By motolab
The float height should be set any time the float...

The float height should be set any time the float system is disturbed, and that can't be done with the carburetor in place.

Regards,

Derek
Forum: Thumpers 07-21-2014, 01:55 PM
Replies: 55
Views: 1,760
Posted By motolab
The '01 cylinder is cosmetically different in...

The '01 cylinder is cosmetically different in that it is black whereas '03 and up is grey. The rod was updated at some point, but I don't know when or in what manner (the length is sure to be the...
Forum: Thumpers 07-21-2014, 09:01 AM
Replies: 1,737
Views: 281,706
Posted By motolab
4.5mm is too small for the tap to be able to...

4.5mm is too small for the tap to be able to work.

4.5 mm means that it may not be too late to get the hole on axis. This can probably be accomplished with an end mill or other suitably rigid...
Forum: Thumpers 07-20-2014, 09:17 PM
Replies: 55
Views: 1,760
Posted By motolab
Interesting. I'll file that away in the memory...

Interesting. I'll file that away in the memory banks. Strange that I have not seen bike nor parts listing that way (from some time in '97 to '02).The only '07 parts listing without SAS port I have...
Forum: Thumpers 07-20-2014, 04:24 PM
Replies: 55
Views: 1,760
Posted By motolab
I think the term "old" is more applicable to the...

I think the term "old" is more applicable to the pre-high flow head.

If the OP were to buy an '03 head without SAS port, he would obviously need neither the plug nor the plug gasket.

If the OP...
Forum: Thumpers 07-20-2014, 11:17 AM
Replies: 55
Views: 1,760
Posted By motolab
Why can't he reuse the one from his '01 head? ...

Why can't he reuse the one from his '01 head?

Regards,

Derek
Forum: Thumpers 07-20-2014, 11:01 AM
Replies: 55
Views: 1,760
Posted By motolab
As Gunnerbuck already mentioned, the valve guides...

As Gunnerbuck already mentioned, the valve guides come installed in the head.

You won't not need 58336020090 B1 VACUUM CONNECTION M 6X1 1. That's used to run the fuel pump on the Adventure R...
Forum: Thumpers 07-20-2014, 09:28 AM
Replies: 55
Views: 1,760
Posted By motolab
The pre-high flow head models are prone to...

The pre-high flow head models are prone to detonation. Unless significant detonation countermeasures are undertaken, I would not recommend any modifications that improve cylinder filling.No.
...
Forum: Thumpers 07-17-2014, 11:59 AM
Replies: 1,737
Views: 281,706
Posted By motolab
I've lost count of how many frozen fuel screws...

I've lost count of how many frozen fuel screws I've removed, and have to say that I don't recommend drilling out but as a last resort. Procedure I do recommend:

Clamp the carb body squarely on a...
Forum: Thumpers 07-16-2014, 09:50 AM
Replies: 1,737
Views: 281,706
Posted By motolab
Have a look near the bottom of...

Have a look near the bottom of http://www.advrider.com/forums/showpost.php?p=11470034&postcount=1.

Regards,

Derek
Forum: Thumpers 07-16-2014, 09:48 AM
Replies: 1,737
Views: 281,706
Posted By motolab
Were you able to remove all of the remnants of...

Were you able to remove all of the remnants of the screw?

Regards,

Derek
Forum: Vendors 07-16-2014, 09:45 AM
Replies: 77
Views: 18,700
Posted By motolab
Good deal! You're certainly welcome... ...

Good deal! You're certainly welcome...

Regards,

Derek
Forum: Vendors 07-14-2014, 04:52 PM
Replies: 77
Views: 18,700
Posted By motolab
DR650 float valve assembly now in

I now have in stock:

13250-12EH0 Float Valve, $63.85 ea.

Will add it above as well, so the list is complete.

Regards,

Derek
Forum: Thumpers 07-13-2014, 05:33 PM
Replies: 1,737
Views: 281,706
Posted By motolab
Try submerging the carburetor in a heated...

Try submerging the carburetor in a heated ultrasonic bath. You would have to remove the throttle shaft seals first as they are felt and will otherwise act like a sponge. Alternatively you could try...
Forum: Thumpers 07-09-2014, 09:43 AM
Replies: 1,737
Views: 281,706
Posted By motolab
Check the fuel filter for obstruction. ...

Check the fuel filter for obstruction.

Riding with the gas cap off is a way to test if the problem has to do with tank venting.

Regards,

Derek
Forum: Thumpers 07-09-2014, 09:40 AM
Replies: 55
Views: 1,760
Posted By motolab
What are the part numbers for the head without...

What are the part numbers for the head without cam cover and cam cover without head?

Regards,

Derek
Forum: Thumpers 07-08-2014, 09:24 AM
Replies: 55
Views: 1,760
Posted By motolab
Float is when the valve is open but the tip of...

Float is when the valve is open but the tip of the valve is not in contact with the adjuster and/or the roller is not in contact with the cam.It depends on how you define the word "work".There is no...
Forum: Thumpers 07-08-2014, 09:04 AM
Replies: 55
Views: 1,760
Posted By motolab
Did they provide part numbers? Regards, ...

Did they provide part numbers?

Regards,

Derek
Forum: Thumpers 07-07-2014, 01:13 PM
Replies: 55
Views: 1,760
Posted By motolab
The new valve springs give much higher seat...

The new valve springs give much higher seat pressure which will significantly help to reduce float. And they do this with only a minor increase in nose pressure.The old one can be reused unless it is...
Forum: Thumpers 07-07-2014, 10:07 AM
Replies: 55
Views: 1,760
Posted By motolab
Link? Regards, Derek

Link?

Regards,

Derek
Forum: Thumpers 07-04-2014, 07:17 PM
Replies: 55
Views: 1,760
Posted By motolab
The head comes with the cam cover, but not the...

The head comes with the cam cover, but not the valve covers. You should not need to buy new valve covers.

Regards,

Derek
Forum: The Rockies It's all downhill from here... 07-03-2014, 11:41 AM
Replies: 20
Views: 596
Posted By motolab
You're a good sport... Regards, Derek

You're a good sport...

Regards,

Derek
Forum: The Rockies It's all downhill from here... 07-03-2014, 11:35 AM
Replies: 20
Views: 596
Posted By motolab
Does it also idle happily with the flux capacitor...

Does it also idle happily with the flux capacitor completely off?

Regards,

Derek
Forum: The Rockies It's all downhill from here... 07-02-2014, 05:47 PM
Replies: 20
Views: 596
Posted By motolab
If the idle speed screw is all the way backed off...

If the idle speed screw is all the way backed off and the butterfly indeed closes completely (i.e. binding cables are not preventing it from closing), it sounds to me like there is an air leak, ...
Forum: The Rockies It's all downhill from here... 07-02-2014, 05:40 PM
Replies: 20
Views: 596
Posted By motolab
I would like to request that you use the terms...

I would like to request that you use the terms "float height", or "fuel level", but not "float level". If you use the term "float level", it is possible to get confused between float height...
Forum: The Rockies It's all downhill from here... 07-02-2014, 05:23 PM
Replies: 20
Views: 596
Posted By motolab
He has given some FCR jetting recommendations...

He has given some FCR jetting recommendations that are way out in space.

Regards,

Derek
Forum: The Rockies It's all downhill from here... 07-02-2014, 05:22 PM
Replies: 20
Views: 596
Posted By motolab
BST40 carburetors have cold start enrichment...

BST40 carburetors have cold start enrichment circuits instead of chokes. A choke is closed when an engine is cold and opened when it is warm, whereas a fuel enrichment circuit is opened when...
Forum: Thumpers 07-02-2014, 04:39 PM
Replies: 1,737
Views: 281,706
Posted By motolab
Install larger main jets one size increment at a...

Install larger main jets one size increment at a time until the symptom goes away at WOT, see if it persists at other openings, then report back.

Regards,

Derek
Forum: Thumpers 07-02-2014, 03:53 PM
Replies: 106
Views: 6,004
Posted By motolab
How about CSEC for short?I'm not surprised. Many...

How about CSEC for short?I'm not surprised. Many manufacturers use similar misleading terminology. Incidentally, the parts list calls the device a "STARTING PISTON MIKUNI".

Regards,

Derek
Forum: Thumpers 07-02-2014, 01:12 PM
Replies: 1,737
Views: 281,706
Posted By motolab
I'm glad to hear! Regards, Derek

I'm glad to hear!

Regards,

Derek
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