Crankcase Stuffers ,Mercury,and now OMC

[Schramer]

Agreed..... Mr. Carson is not somone I would worry about getting an issue resolved, he's the best!

[baja200merk]

Every front half I’ve cut we had to cut that boss off the #1 for clearance. If you can shim the cage so it’s angled a bit down might fit.

[C.C.Hiliner]

Would would it do for a stock V6 OMC 200 Looper like mine, Chris? Any advantage?

[Captain75]

I just got a set for omc. They are really nice. Beautifully cut and look to fit perfect.

I’ve experimented a lot with stuffers on my looper motors. They definately give you a seat of pants gain, a least when it comes to instant off idle throttle response. A more crisp looper compared to the sometimes sluggish sensation when you bury the throttle going in gear (pulling skiers etc)

Looks great Chris! Do you think I could modify these to fit the older type intakes I am using?

[ChrisCarsonMarine]

[QUOTE=Captain75;3113002]I’ve experimented a lot with stuffers on my looper motors. They definately give you a seat of pants gain, a least when it comes to instant off idle throttle response. A more crisp looper compared to the sometimes sluggish sensation when you bury the throttle going in gear (pulling skiers etc)

Looks great Chris! Do you think I could modify these to fit the older type intakes I am using?[/QUOTE
We'll see.When I first started the looper stuffers I assumed the large(late) diamond intake would be the best to go with,most common and I thought best intake tract.Am I wrong?I'm not being the least sarcastic,and obviously haven't studied them enough.After sealing the crankcase chamber on the front half and cc'ing # 1 and #2 I have found the interferance area in #1 displaces 9 cc's,the present stuffers displace a little over 7 cc's,so leaving the stuffer off #1 will actually help balance the front half.However,to get the chambers close the 23 cc tunnels on #3 and#5 leading to the center main bolt need to be filled...I'm planning on working on that next month,as time provides.
As to the other intakes,I found two more designs,the teacup that uses the same 6 petal cage as the diamond I thought was best,and a diamond type that mounts the 5 petal aluminum cage,which has a smaller (narrower) reed cage and intake slot to match.The present stuffers could not be modified to use in the 5 petal intake/cage setup.
The teacup style,with the 6 petal cages, would accept the present stuffers with some modification to the stuffer,due to the footprint of the cage was milled a few thousandths to insure a flat seat for the cage.The whole pocker could be touched up on the mill,or the stuffer trimmed a little to fit.
The plan was to provide a drop-in part,not needing modification,I missed the mark a bit on that,being spoiled by the great results with the Merc counterparts.I need to be more through,and will,as time allows.
At present time,the stuffers we have will fit nicely in 2-6,where they do the most good,only modification probably needed will be 020-030 filed from the bolt bosses on the ends of the cages.This could be remedied by using 065 thick stuffers instead of the present 095,but a third of the benefit would be lost.I look forward to your feedback,and will send you stuffers to work with for your input,give a call,305-394-3354,Chris

[Chaz]

That's why he's the professor ...

[Captain75]

[QUOTE=Chris Carson's Marine;3113009]

I’ve experimented a lot with stuffers on my looper motors. They definately give you a seat of pants gain, a least when it comes to instant off idle throttle response. A more crisp looper compared to the sometimes sluggish sensation when you bury the throttle going in gear (pulling skiers etc)

Looks great Chris! Do you think I could modify these to fit the older type intakes I am using?[/QUOTE
We'll see.When I first started the looper stuffers I assumed the large(late) diamond intake would be the best to go with,most common and I thought best intake tract.Am I wrong?I'm not being the least sarcastic,and obviously haven't studied them enough.After sealing the crankcase chamber on the front half and cc'ing # 1 and #2 I have found the interferance area in #1 displaces 9 cc's,the present stuffers displace a little over 7 cc's,so leaving the stuffer off #1 will actually help balance the front half.However,to get the chambers close the 23 cc tunnels on #3 and#5 leading to the center main bolt need to be filled...I'm planning on working on that next month,as time provides.
As to the other intakes,I found two more designs,the teacup that uses the same 6 petal cage as the diamond I thought was best,and a diamond type that mounts the 5 petal aluminum cage,which has a smaller (narrower) reed cage and intake slot to match.The present stuffers could not be modified to use in the 5 petal intake/cage setup.
The teacup style,with the 6 petal cages, would accept the present stuffers with some modification to the stuffer,due to the footprint of the cage was milled a few thousandths to insure a flat seat for the cage.The whole pocker could be touched up on the mill,or the stuffer trimmed a little to fit.
The plan was to provide a drop-in part,not needing modification,I missed the mark a bit on that,being spoiled by the great results with the Merc counterparts.I need to be more through,and will,as time allows.
At present time,the stuffers we have will fit nicely in 2-6,where they do the most good,only modification probably needed will be 020-030 filed from the bolt bosses on the ends of the cages.This could be remedied by using 065 thick stuffers instead of the present 095,but a third of the benefit would be lost.I look forward to your feedback,and will send you stuffers to work with for your input,give a call,305-394-3354,Chris

Sounds great Chris!
I will give you a call. Just have to find the right moment since I have night when sun is shining in fla...
I agree no1 is a bit tricky due to limited space and the sharp bend.
//Anders

[Instigator]

Chris do you have pricing for the OMC's yet?

BTW, every stuffer Ive ever used has needed fitting to work.

Remember too that the reed stop also fills crankcase volume.

[ChrisCarsonMarine]

Chris do you have pricing for the OMC's yet?

BTW, every stuffer Ive ever used has needed fitting to work.

Remember too that the reed stop also fills crankcase volume.

65$ for the set of 5,serving cyls 2-6.Havent worked out the main bolt channels yet,but a cork trimmed properly with a smear of epoxy over it will suffice,Chris

[Instigator]

I use a plastic rod the diameter of the bolt access bore, cut to the angle of the case.
A 12” rod will make a bunch of the them.
I keep spares in my tool box.
Friction fit, they tap right in.

For removal, I drive a drywall screw part way into it, hook a hammer to it and pry (against a slab of wood) it out.
I clean em up an reuse em over and over.

Let me get a count and I’ll have an order for you Chris.

65$ for the set of 5,serving cyls 2-6.Havent worked out the main bolt channels yet,but a cork trimmed properly with a smear of epoxy over it will suffice,Chris

[Instigator]

I should add:

Ive cut a bunch of cases but dont remember having interference issues???
Probably, all were w/aftermarket reeds w/no stops.
I remember them being close but dont remember contact.

My 3.3 is cut .100".
What Chris is doing is different though.

W/o counting, Im probably at 3 sets.

[ChrisCarsonMarine]

Without the stops I think they will all fit,providing you trim the cage bolt bosses for clearance in the front half,no problem if you want sets if 6...but the #1 intake chamber is around 9 cc's smaller,so leaving the stuffer out will help balance it out.Where do you find the plastic rod,I was preparing to order delrin 1 in rod...a little overkill I think,Thanks Gary,Chris

[Instigator]

Interesting on intake volume differences.
I never CC’d them but should have.

I think the 1” rod came from mscdirect.com

Without the stops I think they will all fit,providing you trim the cage bolt bosses for clearance in the front half,no problem if you want sets if 6...but the #1 intake chamber is around 9 cc's smaller,so leaving the stuffer out will help balance it out.Where do you find the plastic rod,I was preparing to order delrin 1 in rod...a little overkill I think,Thanks Gary,Chris

[hondatech]

Agreed..... Mr. Carson is not somone I would worry about getting an issue resolved, he's the best!

Mistakenly got charged for another set of reeds,called and spoke to Chris. He was willing to refund immediately,but had him ship a set for another build i was doing.
Recommend his services and products 100%.

[Captain75]

65$ for the set of 5,serving cyls 2-6.Havent worked out the main bolt channels yet,but a cork trimmed properly with a smear of epoxy over it will suffice,Chris

I use a wooden dowel. I cut a piece off a broom shaft at an angle that correlates with block structure. Fits perfekt and swells into a snug fit.
Chris, you could probably make one for cyl#1, but I think It should be shaped to create a downward angle.