I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

[mxcobra]

I have a mercruiser 898 the log manifolds were junk.
Got a hold of theese volvo penta manifolds I want to make work on the motor
I have made brackets for the acc.
I have also found and ordered parts to make the plumbing "plumb" with the log style thermastat housing....
:facepalm: Is this going to work???...

 

[mxcobra]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

 

[wingless]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

Those look like nice parts.

Can you do a side by each comparison to define the differences?

 

[dubs283]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

Is this going to work???...

maybe, maybe not - i know i wouldn't try it but thats me, i like my stuff to be the right way

at the very least you are gonna have to figure a way to get the risers to connect to the y-pipe

check the merc manual for cooling water diagrams for your engine and old set-up to be sure you have it plumbed correctly

its worth a shot i guess - did you get a screamin deal on the volvo parts??

 

[Lyle29464]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

do a search on here for water flow diagrams

 

[Pete104]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

Looks like it will work. What about from the risers to exhaust pipe? Can you use merc tubes or not?

 

[Don S]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

They will work, but you will need to replace that thermostat housing for the Volvo style. The one you have needs separate plumbing for riser and manifolds being separated. Much easier to just use the Volvo housing.

 

[mxcobra]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

Thanks Don that makes sense, Probly would be cheaper then what i was going to do-route the hoses just like mercruiser does it.
what if I just pluged the four lower hoses on the mercriser thermastat housing- and hook the two after the thermostat to manifolds, in theory that would work with 4 weak points?

 

[mxcobra]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

I also plan on routing some of the hot water to the cabin for heating and washing hands and stuff

 

[Don S]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

.
what if I just pluged the four lower hoses on the mercriser thermastat housing- and hook the two after the thermostat to manifolds, in theory that would work with 4 weak points?

No, you have to have some constant flow to manifolds at all times. The thermostat housing is what controls that. The original housing does not have those abilities. Closing off ports is not an option.

 

[mxcobra]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

ok I will just return the fittings I got and get the volvo housing-this I think will work slick...
I will save a small fortune on hose!

 

[Pete104]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

That housing from volvo is pretty pricey!

 

[mxcobra]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

one hundread bucks i paid for them preaty good deal i think-
with the thermostat and hose another hundread bucks not bad for a conversion i have seen priced out for over a grand...

maybe, maybe not - i know i wouldn't try it but thats me, i like my stuff to be the right way

at the very least you are gonna have to figure a way to get the risers to connect to the y-pipe
check the merc manual for cooling water diagrams for your engine and old set-up to be sure you have it plumbed correctly

its worth a shot i guess - did you get a screamin deal on the volvo parts??

conecting to the y pipe will be the easy part some 4" exhust hose clamps and a couple 75 deg elbows

 

[mxcobra]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

That housing from volvo is pretty pricey!

I found one for like 65 bucks $69.95 to be exact

 

[Pete104]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

WOW, great!

 

[Don S]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

In case you don't know how to install the new housing, here is a picture. Note the thermostat and oring that holds it into place, it is absolutely essential it's installed correctly in the housing for it to work.

 

[mxcobra]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

I was waiting for a comment like this, post number 8 i was bass achwards. The stat goes under the housing at the block.
Thanks for he help Don, Your comments really sparked the old brain for me....
when I get her up and going I wil return to this post with a vid. for everyone to see.

 

[Don S]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

Here are a couple more that may help.

 

[CheapboatKev]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

Don rocks

 

[mxcobra]

Re: I am modifiying a mercruiser with volvo manifolds could use onother eye on it...

I have things in place, really had to tweek the fuel line to get it to have clearance on the volvo thermastat housing.
Other then that things seamed to work out preaty good.
I just need to get the right size bolts and clamp everything doun, then this weekend will do a test start and see how she works