Base gasket replacement procedure
Thread Starter
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Cruiser
Joined: Mar 2010
Posts: 237
Likes: 12
Base gasket replacement procedure
I've read countless threads on leaky base gasket, and plenty of replies saying its a fairly easy job to do in a day.
What procedures should I follow if I'm only going to replace the base gaskets? Will the thicker cosmetic seals change the compression of the motor?
What procedures should I follow if I'm only going to replace the base gaskets? Will the thicker cosmetic seals change the compression of the motor?
Road Warrior
Joined: Nov 2007
Posts: 1,641
Likes: 4
From: south of Boston
gotta move everything out of the way....and when you get to pulling the cylinder, only pull up as far as the piston pin....and remove clips, keeping piston inside cylinder
swapping to stock size cometic base gaskets won't change your compression
swapping to stock size cometic base gaskets won't change your compression
Thread Starter
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Cruiser
Joined: Mar 2010
Posts: 237
Likes: 12
So the position of the pistons won't have any affect on removing anything? Meaning, once I get started, I won't have to rotate the motor at all?
So I'll need:
Base gaskets
Head gaskets
Rocker cover gaskets
Intake gaskets
Exhuast gaskets
And possibily rings
Anything else I should consider?
So I'll need:
Base gaskets
Head gaskets
Rocker cover gaskets
Intake gaskets
Exhuast gaskets
And possibily rings
Anything else I should consider?
Advanced
Joined: Jun 2008
Posts: 94
Likes: 0
if you have to go through all of that - the cam could be replaced...with all of the trimmings.
if not, get a new set of o rings for the push rod tubes as well. Might as well do that.
you are removing the piston, but you are keeping it inside the jug at all times, so you don't have to re-install the rings. Once the jug and piston are off together, you don't need to rotate the motor. this isn't the hard part imo. removing the piston retaining clip is also not hard. get a NEW set of those for a few pennies.
if not, get a new set of o rings for the push rod tubes as well. Might as well do that.
you are removing the piston, but you are keeping it inside the jug at all times, so you don't have to re-install the rings. Once the jug and piston are off together, you don't need to rotate the motor. this isn't the hard part imo. removing the piston retaining clip is also not hard. get a NEW set of those for a few pennies.
Road Warrior
Joined: Nov 2007
Posts: 1,641
Likes: 4
From: south of Boston
So the position of the pistons won't have any affect on removing anything? Meaning, once I get started, I won't have to rotate the motor at all?
So I'll need:
Base gaskets
Head gaskets
Rocker cover gaskets
Intake gaskets
Exhuast gaskets
And possibily rings
Anything else I should consider?
So I'll need:
Base gaskets
Head gaskets
Rocker cover gaskets
Intake gaskets
Exhuast gaskets
And possibily rings
Anything else I should consider?
i would turn the engine over until you know that particular cylinder is at a low point in order to ease removal of piston/cylinder combo over cylinder studs....my 2 cents
and yes, all those gaskets you list you will need to replace.... rocker cover gaskets with the exception of base rocker gaskets might be re-usable, but i would just get new ones
no need for new rings unless you pull piston from cylinder and they need replacing
Thread Starter
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Cruiser
Joined: Mar 2010
Posts: 237
Likes: 12
[QUOTE=Cleetussnow;9961634]if you have to go through all of that - the cam could be replaced...with all of the trimmings.
if not, get a new set of o rings for the push rod tubes as well. Might as well do that. [QUOTE/]
Cam has been replaced with ev27 and cam chest gasket replaced with cometic, and pushrod tube o-rings replaced at that time
if not, get a new set of o rings for the push rod tubes as well. Might as well do that. [QUOTE/]
Cam has been replaced with ev27 and cam chest gasket replaced with cometic, and pushrod tube o-rings replaced at that time
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Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
Just get a top end set and you will have all the gaskets and seals you will need. It's a good time to freshen up the rings and valves. That will pick up the performance a noticable amount.
John
John
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Cruiser
Joined: Jun 2008
Posts: 109
Likes: 1
From: Ethan, S.Dak.
Make sure to pack rags in the base before you take the clips loose so they don't fall in and you only need to take one clip off of each piston to pull the pin. You can take the others ones off on the bench and the reverse with the new ones, will make it easier than doing it on the bike.
