Riser spacer question

[Fishhead-1]

Which riser would you use, I'm going from a half fwc system to a full and want to include the riser in the fwc side.

 

[achris]

What's the engine (Year, model and serial number please)? Those 2 in the picture are for different engines....

Chris....

 

[scoflaw]

The 1 that matches the mating surface on your manifold

 

[Bt Doctur]

I'm going from a half fwc system to a full and want to include the riser in the fwc side.

Why? a gasket seals off the 2 systems
Do you have the height to install a riser?
You also need an engine mounted raw water pump, outdrive impellers will not supply enough water flow

 

[Fishhead-1]

What's the engine (Year, model and serial number please)? Those 2 in the picture are for different engines....

Chris....

Thanks Chris that's what I was wondering, I have a vp 5.7 Gsi its around a 2000 vintage. I'm putting on the merc manifolds and 4" elbows. The height of the top of the VP elbow is 1 1/2" higher that the merc setup without a spacer. I'm going to go out and try to measure the static water line today to see what the manufacturer set it at, but with the spacer I know it would be 1 1/2" higher than before and it never had a issue. I'm adding f6b-9 raw pump, relocating oil filter and other misc items need to be moved, and new larger off engine exchanger. Seakamps remote thermostat housing will tie in the manifold hoses.

 

[Scott Danforth]

I wouldnt be trying to put merc manifold on a VP

 

[Scott06]

Why would you try to put merc manifolds on a vp? I suspect you'll have some fittment issues, in no way should you lower riser height vs the waterline

 

[achris]

If you are going to use Merc manifolds on a VP exhaust set up, then I suggest you use dry-joint manifolds, risers and elbows.

And for everybody else, the engine is the same as a Merc, the manifolds, risers and elbows will be no problem. Adapting to the exhaust collect (Y-pipe) shouldn't be all that hard.

Chris......

 

[Lou C]

I thought of doing that (using the Merc dry joint) when I did my top end overhaul last year but I wound up just using the Volvo center riser set up because I knew it would fit right as long as I used the VP aluminum 90* exhaust elbows and hoses. The Merc design is definitely a better design and the next time if I can get a shop to lend me the parts I will do a trial fit.

 

[Fishhead-1]

Volvo manifolds are not capable of fwc, that's why switching to mercs that are. Vp and mercs elbows are both 7 degree I don't foresee any fitment issues. My manifolds and elbows are due to change and heat exchanger is 19 years old. I will be going on my 6th set of manifold elbows combos since 2000 it's time to switch

 

[Scott Danforth]

achris , the y-pipe on a VP is a single piece, unlike the merc pile of parts

Fishhead-1 , who told you that VP manifolds are not compatable with HX cooling? The truth is the HX isnt sized for the extra heat load.

Go with stainless. Or the salt-away setup developed by Volvo

 

[achris]

achris , the y-pipe on a VP is a single piece, unlike the merc pile of parts...

Never heard of a hacksaw?