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-   -   experience with UNI-Top CMI?? (https://www.offshoreonly.com/forums/general-q/95852-experience-uni-top-cmi.html)

iamfaster 02-04-2005 04:59 PM

experience with UNI-Top CMI??
 
Thinking of purchasing the CMI UNI-Top one piece exhaust and tail pipes. Has anyone had experience fitting this exhaust. I was told that it can be difficult to get to line up with the thru hull fittings. I found a great deal on two sets and can save big money over the regular E-tops with new tail pipes. I am replacing my Gil exhaust so i will need new tail pipes.

I have a 38' 96' scarab with 454's and Bravo drives.

iamfaster 02-04-2005 07:41 PM

Re: experience with UNI-Top CMI??
 
back to top

RLW 02-04-2005 09:03 PM

Re: experience with UNI-Top CMI??
 
My friend had to make some mods to the pipes to fit his TRS setup.
It's not uncommon making provisions for new exhaust.
I'll be doing the same thing in about a month.
Good Luck!

Griff 02-04-2005 09:46 PM

Re: experience with UNI-Top CMI??
 
I put Unitops on my Pantera 2 years ago. I switched from the stock Merc/Gils on my 525SC. Everything lined up just fine. The tail ends are only about 2" from the tips.

fountain333 02-04-2005 11:04 PM

Re: experience with UNI-Top CMI??
 
i am looking into the same thing if you know were another inexpensive set is at please give me a shout??

Griff 02-05-2005 02:01 PM

Re: experience with UNI-Top CMI??
 
1 Attachment(s)
My Unitops dump water at the ends of the pipes, about an inch in from where the water jacket ends. They are 2-3" longer than the Gils and dump closer to the transom than the Gils.

iamfaster 02-05-2005 02:22 PM

Re: experience with UNI-Top CMI??
 
i guess my fear is that i may not have enough distance between the end of the tail pipe and the cut-outs? From what i was told, they have to line up wiyh the transom holes exactly because there is no flexibility in the tails like on the E-tops? If i come 1/4" high or low will i still b able to fit the rubber exhaust hose to the cut-out?

iamfaster 02-05-2005 04:21 PM

Re: experience with UNI-Top CMI??
 
FOUNTAIN333,
I just measured and i dont think the UNI-Tops are going to work. I have them on hold at a CMI distributer. My cost not including shipping was 4,397. for two sets with all fittings. They had one set and brought the other set in for me. I will let you know after I confirm my measurements.

iamfaster 02-05-2005 04:28 PM

Re: experience with UNI-Top CMI??
 
Hey griff, your boat is probable wrapped up for the winter, but would you happen to know the dimension from the crankshaft centerline UP to the CENTER of your thru-hull opening??? I measured from the center of the gimbal pivot up and measured xcross to the center of the thru-hull and I came up with 12 7/8". I was told that you neen 13 7/16" and that you need to be dead on??

iamfaster 02-06-2005 07:05 AM

Re: experience with UNI-Top CMI??
 
back to top

The Menace 02-06-2005 07:12 AM

Re: experience with UNI-Top CMI??
 
I am currently getting pricing for a new set of CMI's. I was planning on shipping one set of my Merc's/Gil's to them for hem to copy.

What are you guys finding for lead times?

iamfaster 02-06-2005 09:35 AM

Re: experience with UNI-Top CMI??
 
back to top

iamfaster 02-06-2005 02:18 PM

Re: experience with UNI-Top CMI??
 
Go Pats!!!!!!!!!!!!!!!!1

Griff 02-06-2005 10:41 PM

Re: experience with UNI-Top CMI??
 

Originally Posted by iamfaster
Hey griff, your boat is probable wrapped up for the winter, but would you happen to know the dimension from the crankshaft centerline UP to the CENTER of your thru-hull opening??? I measured from the center of the gimbal pivot up and measured xcross to the center of the thru-hull and I came up with 12 7/8". I was told that you neen 13 7/16" and that you need to be dead on??


Thats difficult measure with it completely assembled, at least to have 100% confidence in my measurement. It would be easy to be a 1/2 inch or more off.
I could measure it from the outside of the boat using and use the transom assembly as a reference. It would be a comparable measurement for you to check.

Griff 02-06-2005 11:06 PM

Re: experience with UNI-Top CMI??
 
I just measured from the OUTSIDE transom assembly.

The CENTER of the tips is 3 3/8 inches above the top of the Bravo transom assembly. The tip CENTERS are 27 3/4 inches apart.

Also, if you are measuring from the crank center line, if you are slightly out of vertical alignment, that could also change your measurement.

jrz 02-07-2005 09:25 AM

Re: experience with UNI-Top CMI??
 
The CMI Unitop water dump is as far back as the standard Bravo tail.

fountain333 02-07-2005 12:17 PM

Re: experience with UNI-Top CMI??
 
iamfaster did you figure out if the uni tops would work ??

iamfaster 02-07-2005 01:26 PM

Re: experience with UNI-Top CMI??
 
will let you know shortly...been on the phone all day with cmi....doesnt look like they will fit.

talk soon

iamfaster 02-07-2005 01:27 PM

Re: experience with UNI-Top CMI??
 
fountain333, do u need both sets??

fountain333 02-07-2005 02:12 PM

Re: experience with UNI-Top CMI??
 
no i just need one set ! call me if you want 734-819-0474

iamfaster 02-07-2005 03:16 PM

Re: experience with UNI-Top CMI??
 
Mike, let me know if you purchase the uni-tops from OP

Cool Trips 02-07-2005 05:10 PM

Re: experience with UNI-Top CMI??
 
Hardin Marine makes a header called Cyclone shorty that is a direct replacement for Gil/Merc exhaust. It has a four bolt flange on top that bolts to your existing risers. They come polished or satin finish.


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