I believe so. If the '128s are perimeter bolt, you will need new valve covers though.
Are 128 and 113 Interchangable?
Thread Starter
Racer
Joined: Oct 2006
Posts: 378
Likes: 20
From: East Hampton CT
Are 128 and 113 Interchangable?
Greetings,
Can you swap 113 for 128 's? I just blew my head gasket this weekend and dropped the heads off at the machine shop. They're telling me I need almost $800 in head work done including Valve Job, Valve Guides, Springs, and Stem Seals. WTF!
Can I just swap in a set of 113 heads? I see a set for sale at $400. Please let me know as I am now carless and it is getting very cold on the harley!
Thanks
Can you swap 113 for 128 's? I just blew my head gasket this weekend and dropped the heads off at the machine shop. They're telling me I need almost $800 in head work done including Valve Job, Valve Guides, Springs, and Stem Seals. WTF!
Can I just swap in a set of 113 heads? I see a set for sale at $400. Please let me know as I am now carless and it is getting very cold on the harley! Thanks
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
$800.00 is insane. I would try another machine shop before I did anything. I had mine boiled,three angle valve job, umbrella seals, new springs height matched and surface trued for $185.
Last edited by Muffin; Nov 13, 2006 at 05:05 PM.
Thread Starter
Racer
Joined: Oct 2006
Posts: 378
Likes: 20
From: East Hampton CT
Update
I have spoken with other co-workers on this. I have machined valve guides for "what I guess" was for a crazy cam! The valve seats are fine and the guides are not worn.
The valve guides are machined to be level with the valve spring seat resulting that you cannot install valve seals from the felpro gasket set.
There were disks installed to the valves that float with the stem as it travels. I have to post pictures of this. I've been told that this type of valve seal is more for race application.
So here's my situation, change out all the valve guides and have a valve job done to bring it back to stock or just replace the "race valve seals" and install a cam.
Also I found out that the engine is bored .030" over Yeah!!!
Let me know
The valve guides are machined to be level with the valve spring seat resulting that you cannot install valve seals from the felpro gasket set.
There were disks installed to the valves that float with the stem as it travels. I have to post pictures of this. I've been told that this type of valve seal is more for race application.
So here's my situation, change out all the valve guides and have a valve job done to bring it back to stock or just replace the "race valve seals" and install a cam.
Also I found out that the engine is bored .030" over Yeah!!!
Let me know
Thread Starter
Racer
Joined: Oct 2006
Posts: 378
Likes: 20
From: East Hampton CT
OK That's What I'll Do!
I do need a little help. I did some searching and this is what I have...
355 ci
blue top injectors?
full exhaust headers and dual pipes to the back with Flowmasters
machined 128 cylinder heads
Appears to be slightly modified TPI if such a thing
CAM?????
ZZ9
or
LPE 219
or what?
I woundn't mind a slight lope at idle, but it has to idle
Let me know
355 ci
blue top injectors?
full exhaust headers and dual pipes to the back with Flowmasters
machined 128 cylinder heads
Appears to be slightly modified TPI if such a thing
CAM?????
ZZ9
or
LPE 219
or what?
I woundn't mind a slight lope at idle, but it has to idle
Let me know
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Team Owner
Joined: Sep 2003
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Whaaa? you need a good set of 113's? PM me
My bad.... these are 128's
My bad.... these are 128's
Last edited by JrRifleCoach; Nov 14, 2006 at 06:54 PM.
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
Let me get this right.
Your saying that the top of your guides are machined down completely to the valve spring seat? Nothing sticking up past the spring seat (and top side of the cyl head casting) to support the valve stem. If this is true you do yourself a favor by putting new guides in them or (a much cheaper alternative considering your heads are not anything special)by getting a new set of heads. If this is correct who ever did this to your engine was a total moron.
Just for your info: The disk type seals that float with the valve, you mentioned sound like the old style "o ring" valve stem seals SBC's used in the 60's-70's. Or maybe a BBC, Crysler or Ford style "Umbrella' seal, depending on how big the "disk' is. Fine for a regular street car but no one in their right mind would put them on a race car due to the fact that, since they "ride along" with the valve, they add weight to the valve and increase the possibality of valve float. Again some more trailer park race car building at its best.
I'm not trying to be little your Corvette or you, as you obviously had no idea about the debachury that lay within your engine. Just do the right thing and get it fixed correctly, by getting a new set of heads or putting new guides in yours.
Will
Your saying that the top of your guides are machined down completely to the valve spring seat? Nothing sticking up past the spring seat (and top side of the cyl head casting) to support the valve stem. If this is true you do yourself a favor by putting new guides in them or (a much cheaper alternative considering your heads are not anything special)by getting a new set of heads. If this is correct who ever did this to your engine was a total moron.
Just for your info: The disk type seals that float with the valve, you mentioned sound like the old style "o ring" valve stem seals SBC's used in the 60's-70's. Or maybe a BBC, Crysler or Ford style "Umbrella' seal, depending on how big the "disk' is. Fine for a regular street car but no one in their right mind would put them on a race car due to the fact that, since they "ride along" with the valve, they add weight to the valve and increase the possibality of valve float. Again some more trailer park race car building at its best.
I'm not trying to be little your Corvette or you, as you obviously had no idea about the debachury that lay within your engine. Just do the right thing and get it fixed correctly, by getting a new set of heads or putting new guides in yours.
Will
Thread Starter
Racer
Joined: Oct 2006
Posts: 378
Likes: 20
From: East Hampton CT
Thank You Everyone For Your Input!
Thank You Everyone For Your Input!
I'm going to put these 128 heads aside and pick up a set of 113's.
Questions-
Do I need to modify the intake or will the 113's fit without modification?
Do the 113's require a different headgasket?
Any recommendations on a better than stock (ex. felpro) headgasket?
You guys rock
I'm going to put these 128 heads aside and pick up a set of 113's.
Questions-
Do I need to modify the intake or will the 113's fit without modification?
Do the 113's require a different headgasket?
Any recommendations on a better than stock (ex. felpro) headgasket?
You guys rock
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
113's should bolt right up with no problems.
I use
Victor Reniz (buy them at Car Quest)
Mr Gasket (PN 5800)
or Corteco head gasket sets (PN 21643CS).
Will
I use
Victor Reniz (buy them at Car Quest)
Mr Gasket (PN 5800)
or Corteco head gasket sets (PN 21643CS).
Will
Last edited by rklessdriver; Nov 14, 2006 at 02:20 PM.
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