Unable to remove these from old manifolds..what are they when I ask for new ones?

YeOldeStonecat

Active Member
Jun 10, 2018
332
Waterford, CT, boat in Deep River, CT
Boat Info
'97 300 DA "Me-Shell"
Engines
Twin 5.7 V-Drive
Tried hitting these with penetrating oil, heating up with torch...have a huge pipe wrench, nothing can budge them. So....I need 2x new ones.

IntakeElbow1.jpg
IntakeElbow2.jpg
IntakeElbow3.jpg
 
Try to match them up in the plumbing aisle.
 
I've always just referred to them as elbows. But you should be able to get 'em out. Use some force, man! Or maybe "the" Force...

Before you go cranking on it, though, put the male pipe fitting back in it to keep it from possibly deforming. Try a hammer on the wrench, too... and/or the top of the fitting.
 
Last edited:
Try the auto parts, use that fitting on brake lines more than in plumbing jobs.
 
Those manifolds will be uncomfy as heck to put in my pocket to go walk in and hold up and compare.....

If I could remove them I would walk in and hit that aisle and compare til I found 'em...but...

Hard to tell by looking at them but as was indicated before they look to be 1/2” NPT.
Here is a picture of one on Amazon, but I’m pretty sure you can get it at Home Depot.

2241DE26-F683-42BC-8582-9668231AC809.jpeg
 
Or, if a nipple/barb gets threaded in the female side for a hose to be slipped over and clamped to it he can use a suitable 1/2” MPT adapter instead that has the correct size barb end for the hose to attach to.
Either way:
Hopefully he gets the idea that there are easy solutions out there that can be adapted if he can’t get the old ones off using a pipe wrench after a good soaking with PB Blaster.
Slipping a length of pipe over the end of the pipe wrench to extend the handle will increase leverage to make removal easier.
Worst case scenario is he snaps the old fitting in the old manifold and he is back where he started needing a new brass elbow. Nothing to lose.
 
Last edited:
As far as a new fitting goes, did you try contacting a Merc dealer? A Mercruiser certified dealer, specifically. They'll either have it in stock, can get it quickly, or will know what the new replacement is. Don't worry about sizes - the parts guy will know immediately based on the pic. Should be a 2 minute phone call/email/stop by the store.

EDIT: Oh, when you used the heat, were you able to get the surrounding manifold cherry red?
 
Last edited:
After heating to cherry red, put a 4 foot pipe in the end of the wrench for leverage.
 
I posted the correct part number for that fitting and it dosent require a 4 foot extention on a wrench
 

Forum statistics

Threads
112,872
Messages
1,420,827
Members
60,871
Latest member
cbrcassio
Back
Top