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| 3.0L install/riser boot short |
| Author |
Message |
    
John
Member
Username: johnnynegaunee
Post Number: 37
Registered: 08-2007
| | Posted on Wednesday, May 14, 2008 - 05:28 pm: | 
|
I replaced my tired out 2.5L with a 3.0 with a lot less hours. It's mostly done, but I see the 3 liter has a shorter riser that's hugs the motor a little closer so that my rubber boot is short about 4" and offset to outside about 1.5". Can you get a longer boot for this or will I need to change the manifold/riser? Thanks to whomever has done this and can inform me. |
Rod Stewart
Senior Member
Username: rod_stewart
Post Number: 1313
Registered: 08-2006
| | Posted on Wednesday, May 14, 2008 - 06:41 pm: |
|
The right fix is likely the proper downpipe for the 3 liter. It must be different than the 2.5 one.
That would be a big pain to change now that the engine is in the boat however.
The worry about using a longer rubber coupler is the offset, and possible hot spots it may cause. Common wisdom for marine exhausts is that metal should be used for major changes in direction, angle, plane, etc; and rubber couplers should be used only for straight sections and to connect the metal parts together.
I don't know if there is a different riser that you could swap onto the 3 liter. Will the one off your 2.5 fit at all?
You can buy straight marine grade "wet exhaust hose" by the foot in various diameters, so you may have to custom cut your own coupler.
Rod |
Bondo
Senior Member
Username: bondo
Post Number: 1015
Registered: 12-2006
| | Posted on Sunday, May 18, 2008 - 11:15 am: |
|
"or will I need to change the manifold/riser?"
Ayuh,.....
If you use the 1 off your 2.5l,... Everything will line up....
It sounds like your going from a pre-Alpha to an Alpha.....
They're Not a direct swap.... |
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