Question About Replacing Float Chamber on 1990 Johnson 115 VRO

[montanafos]

I am replacing the float chambers on my 1990 Johnson 115 VRO model #J115TLASB. Having a tough time getting the correct parts shipped to me. Ordering based on the BRP site and receiving some old stuff, some new stuff, based on who's translation of the part numbers was used during cross referencing of old parts. Anyway, have received an aluminum float chamber of the correct part number (on the box) but am finding that the BRP site shows a 25C and 67C (high speed) orifices as parts for the float chamber. This aluminum chamber I received has the threads for the 67C orifices (exterior of chamber body) but there are not threads in the locations where the 25C orifices are to be placed (interior of the chamber)...based on the BRP site diagram. Would these interior orifices have become "fixed" at some point, eliminating the need for these replacement orifices? Hope that made sense. The holes are there, just with no threads to accept an orifice. Greatly appreciate your help.

 

[BonairII]

Re: Question About Replaceming Float Chamber on 1990 Johnson 115 VRO

Re: Question About Replaceming Float Chamber on 1990 Johnson 115 VRO

Out of curiosity...WHY are u replacing your float chambers? Are they physically damaged?

 

[montanafos]

Re: Question About Replaceming Float Chamber on 1990 Johnson 115 VRO

Re: Question About Replaceming Float Chamber on 1990 Johnson 115 VRO

Out of curiosity...WHY are u replacing your float chambers? Are they physically damaged?

Warped. I have the plastic float chambers currently and they have a warping problem. The permanent fix is replacement with the aluminum chambers. I had one lapped last year and the other is doing the same thing I believe as I'm experiencing the same symptoms. These bowls are known for having this issue.

 

[seahorse5]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

Aluminum float chambers use a smaller threaded jet than the plastic ones do. A good parts person or trained mechanic knows what you need.

 

[emdsapmgr]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

The new aluminum bowls require additional parts during the conversion. Years ago, OMC offered whole kits. The new alum bowls (only) will need some different parts. The bowl drain screws are different (thread pitch.) The small jets in the bowl are a different thread size. You will have to replace those jets: but get the same size jet, but with the correct threads. A dealer should be able to help you.

 

[montanafos]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

The new aluminum bowls require additional parts during the conversion. Years ago, OMC offered whole kits. The new alum bowls (only) will need some different parts. The bowl drain screws are different (thread pitch.) The small jets in the bowl are a different thread size. You will have to replace those jets: but get the same size jet, but with the correct threads. A dealer should be able to help you.

In the aluminum bowl I received there are no threads for the small internal jets. That is what caused my concern when I went to install the mid range jets...there are no threaded holes for them in the chamber...only a blank hole. I was guessing that either I have the wrong part or that the mid range jets had been replaced with a fixed jet of some sort, eliminating the threaded holes and replacing with just a "hole".

 

[emdsapmgr]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

Typically, when you purchase replacement bowls, you order the same part number that were originally on that engine. Bombardier will superceded them with the newer aluminum bowls. They should come tapped with the threads for the mid jets as well as the high speed jets. I'd take them back to the dealer-they may have been mismachined at the factory.

 

[montanafos]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

Typically, when you purchase replacement bowls, you order the same part number that were originally on that engine. Bombardier will superceded them with the newer aluminum bowls. They should come tapped with the threads for the mid jets as well as the high speed jets. I'd take them back to the dealer-they may have been mismachined at the factory.

I bought them online (auction site) and have tried to reach the seller. I bought 2 separate bowls and BOTH were listed as the correct part number for the aluminum bowls and one is the original plastic style and one is aluminum and has no threads for the mid jets. No responses from the sellers yet but I'm covered by Paypal if they don't respond. Greatly appreciate the help...

 

[emdsapmgr]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

I did not know you purchased replacement bowls from an auction site. Thought they were direct Bombardier replacments. You need to be careful, with intending to use these bowls. Some of the early crossflow carbs did not use mid jets. The early aluminum bowls (up through 1979) did not have mid jets at all. In 1980 they began using them, but they are in a different location than the ones inside the bowl on your engine. The passages on these bowls from another year may not match up to your upper carb bodies. You may be getting into a problem if you try to use these bowls on your late model crossflow. You need to verify just what bowls you have.

 

[montanafos]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

I did not know you purchased replacement bowls from an auction site. Thought they were direct Bombardier replacments. You need to be careful, with intending to use these bowls. Some of the early crossflow carbs did not use mid jets. The early aluminum bowls (up through 1979) did not have mid jets at all. In 1980 they began using them, but they are in a different location than the ones inside the bowl on your engine. The passages on these bowls from another year may not match up to your upper carb bodies. You may be getting into a problem if you try to use these bowls on your late model crossflow. You need to verify just what bowls you have.

Appreciate the reply. Did not realize I could find these NEW, as in current stock. The auction site is reputable and these are marine dealers I bought from, unfortunately it looks like they may have been misinformed. I provided my year make and model of outboard and they confirmed the parts...did not work out that way though. Thanks again. Woudl you recommend a specific channel to purchase the bowls, carb kits and orifices, etc?

 

[montanafos]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

I did not know you purchased replacement bowls from an auction site. Thought they were direct Bombardier replacments. You need to be careful, with intending to use these bowls. Some of the early crossflow carbs did not use mid jets. The early aluminum bowls (up through 1979) did not have mid jets at all. In 1980 they began using them, but they are in a different location than the ones inside the bowl on your engine. The passages on these bowls from another year may not match up to your upper carb bodies. You may be getting into a problem if you try to use these bowls on your late model crossflow. You need to verify just what bowls you have.

Quick question...would an OMC 437214 float chamber be a specific float chamber for specific applications or could a 437214 be several float chambers for various applications? For instance, could a 437214 fit an early model outboard carb that did not have the mid range jets and then a later version of the 437214 fit later models that DID have the mid size jets? Or would there have been two separate part numbers for these two very different bowls and their very different applications? In essence, is the 437214 just a generic part number for carb bowls or would it represent a very specific carb bowl that you can track to a specific outboard application? Hope that all made sense. I'm trying to figure out whether or not I'm buying the wrong thing or if these folks are sending me the wrong thing...with the correct part numbers on it.

 

[emdsapmgr]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

Your original plastic bowl 398544 supercedes to 435733 which supercedes to 437214. About $100. Bombardier has many of the 214's in stock. About $100. The part number you are working with is the correct factory superceded part number for your engine. I am suprised that it does not match up perfectly. It should look almost absolutely identical to the one you took off, except in aluminum. That bowl came out in midyear 1987 and fits all crossflows up through at least the 1993 model year. When you received the bowl was it in a factory box with that part number?

 

[montanafos]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

Your original plastic bowl 398544 supercedes to 435733 which supercedes to 437214. About $100. Bombardier has many of the 214's in stock. About $100. The part number you are working with is the correct factory superceded part number for your engine. I am suprised that it does not match up perfectly. It should look almost absolutely identical to the one you took off, except in aluminum. That bowl came out in midyear 1987 and fits all crossflows up through at least the 1993 model year. When you received the bowl was it in a factory box with that part number?

It did come in a factory box with part number and had an envelope with it that contained new o rings and new drain plugs. The part that puzzles me is that where the internal mid range orifices would be, instead of a pair of threaded "holes" for inserting the orifices there are two blank holes. Same location, just blank holes with no way to thread an orifice in them. That's why I was wondering if the mfg had eliminated the replacement orifice for this bowl and had gone to a fixed orifice. I have not removed mine yet as I don't want to end up with a torn apart motor and the wrong parts and have a ton of delays with pending lake time in the next couple weeks. Based on the brp site, I'm supposed to have the two high speed jets...67C...and a pair of mid jets...25C. I have the two high speeds but nowhere to insert the mids.

 

[emdsapmgr]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

I'd call the Bombardier consumer hotline and talk to a tech. My guess is that someone forgot to tap the holes for the mid jets. Waukegan, Ill: 847-689-7090.

 

[montanafos]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

I'd call the Bombardier consumer hotline and talk to a tech. My guess is that someone forgot to tap the holes for the mid jets. Waukegan, Ill: 847-689-7090.

Will do...thanks. I'm considering dropping the boat off at my local marine dealer and letting them finish what I've only just begun to do. The inconsistencies in the parts I'm ordering to save a few bucks with me doing the job are only costing me money in the long run.

 

[montanafos]

Re: Question About Replacing Float Chamber on 1990 Johnson 115 VRO

I'd call the Bombardier consumer hotline and talk to a tech. My guess is that someone forgot to tap the holes for the mid jets. Waukegan, Ill: 847-689-7090.

Just called them and they won't answer technical questions about anything produced before 1997...my outoard is a 1990. I'm advised to go to my dealer. Should have done that from the beginning I'm thinking. Appreciate all of the help.