Tom8757
Member
I am looking for a "Mancini" or "Detroit Tools" 426 Hemi Valve Spring Compressor to take the Valve Springs off with engine in the car. Does anyone have one for sale? Or know where I can get one?
426 Hemi "Mancini" or "Detroit Tools" Valve Spring Compressor Needed
- Thread starter Tom8757
- Start date
Pikser
Well-Known Member
Not sure if they still make these?
https://www.manciniracing.com/onvaspreto.html
http://www.buxtonengineering.com/on_head_valve_spring_compressor.php
https://www.manciniracing.com/onvaspreto.html
http://www.buxtonengineering.com/on_head_valve_spring_compressor.php
Used the KD compressor with star wheel on top. Hose clamp to hooked arms in but couldn't hook inner spring. Had to push on it to collapse inner spring while removing keepers with a magnet. Of course piston at TDC and compressed air on cylinder I was working on. Weld a 3/4" nut on to star wheel so you can tighten with a rachet.
Last edited:
Tom8757
Member
Tom8757
Member
Mancini does not make it anymore. But that’s what I am looking for. I will contact Buxton. Thank you
Tom8757
Member
Tom8757
Member
Does this work on a 426 Hemi?
Thank you
Thank you
Changed springs on my 65 dodge with a Hemi. One problem was spring when compressed curved. Could push hooks off spring. Put a hose clamp around spring and compressor arm to keep arms in place. Made another long arm and put it inside short arm to pull spring evenly. See picture and crude drawing. The thing next to compressor has a magnetic tip I used to remove keepers. You may have to do some engineering 
of your own to get it to work but if I did it I'm sure you can! Going to look at it tomorrow again on making that second long hook. The shoulders on hook think were made to keep hook from just sliding up and not doing anything. Picture 2 is where I put it. Couldn't find my hook, dam.
of your own to get it to work but if I did it I'm sure you can! Going to look at it tomorrow again on making that second long hook. The shoulders on hook think were made to keep hook from just sliding up and not doing anything. Picture 2 is where I put it. Couldn't find my hook, dam.
Tom8757
Member
Changed springs on my 65 dodge with a Hemi. One problem was spring when compressed curved. Could push hooks off spring. Put a hose clamp around spring and compressor arm to keep arms in place. Made another long arm and put it inside short arm to pull spring evenly. See picture and crude drawing. The thing next to compressor has a magnetic tip I used to remove keepers. You may have to do some engineering
Tom8757
Member
I will give this a try... Good Ingenuity... thank you
It's not like a $100 or more tool. Remember piston at TDC and air in cylinder.
I just used the HF variation of that KD tool. Total pos. The tangs don't have any "hook" to them to grab spring. I used a zip tie to hold it all together, and I was cranking that tool, wearing gloves, tried a socket on one of the handle "star" wheel - No Dice. It got to the point where I could not tighten any more and keepers still were not exposed enough to get out with a magnet.
It is a pita. I had to push down on tool to compress damper and inner spring to remove keepers. Agree lousy to work with but when its all ya got....
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