3 to 4 point mounts
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3 to 4 point mounts

  1. #1
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    Default 3 to 4 point mounts

    Since I'm rebuilding the 429 and bumping it to a 466, I'd like to upgrade a few things. The PO pulled the 429 out of a passenger car, so it had a non-baffled 5qt oil pan , which I want to replace with a 10qt, prob an Armando's since I've not found a single report of anyone having any issues with them.
    Upgrading means I'll have to move from a 3pt mount to a 4pt. I've thought about a rail mount, but I don't think it'll be worth the $600+.
    I picked up a set of Guardian front & rear mounts that included the matching WP plate for $100 w/shipping.

    Here's what I'm thinking for setting up the 4pt, which I've read can be a real PIA.

    Bolt the original motor mounts and bellhousing to the bare block.
    Install the block with the original 3pt mounts.
    Mount the front plate to the block.
    Mock up the new front feet, mark and drill holes.
    Bolt front feet to the stringer and front plate.
    Remove rear mount and bellhousing.
    Install rear plate to block.
    Mock up new rear feet, mark and drill holes.
    Bolt rear feet to stringer and rear plate.
    Pull block out and remove original front mounts.
    Re-install block to verify fitment.

    Seem feasible??

    Thoughts on utilizing a long stringer support vs large fender washers?

    Thanks!!!
    1978 Glastron/Carlson CV23; 429, Berk jet.

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  3. #2
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    Default

    Quote Originally Posted by 86NovaII View Post
    Since I'm rebuilding the 429 and bumping it to a 466, I'd like to upgrade a few things. The PO pulled the 429 out of a passenger car, so it had a non-baffled 5qt oil pan , which I want to replace with a 10qt, prob an Armando's since I've not found a single report of anyone having any issues with them.
    Upgrading means I'll have to move from a 3pt mount to a 4pt. I've thought about a rail mount, but I don't think it'll be worth the $600+.
    I picked up a set of Guardian front & rear mounts that included the matching WP plate for $100 w/shipping.

    Here's what I'm thinking for setting up the 4pt, which I've read can be a real PIA.

    Bolt the original motor mounts and bellhousing to the bare block.
    Install the block with the original 3pt mounts.
    Mount the front plate to the block.
    Mock up the new front feet, mark and drill holes.
    Bolt front feet to the stringer and front plate.
    Remove rear mount and bellhousing.
    Install rear plate to block.
    Mock up new rear feet, mark and drill holes.
    Bolt rear feet to stringer and rear plate.
    Pull block out and remove original front mounts.
    Re-install block to verify fitment.

    Seem feasible??

    Thoughts on utilizing a long stringer support vs large fender washers?

    Thanks!!!
    There is an easier way of doing this. Give me a call at the shop 951 272 6060

  4. #3
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    Default

    Hi Greg
    Played phone tag with you a few times, but this has been on the backburner and I haven't gotten back to it.
    I think I may have an issue using a 4pt mount and may have to go to a rail mount.

    It looks to me like the front feet will bolt through right at the seam where the 2nd stringer is glassed in. I measured and the mounting plate will be just about at the seam. Bottom of pic is towards the front of the boat. Thoughts?
    Thanks!

    Click image for larger version. 

Name:	mount placement.jpg 
Views:	75 
Size:	6.4 KB 
ID:	533593
    1978 Glastron/Carlson CV23; 429, Berk jet.

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  6. #4
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    Default 3 to 4 point

    Quote Originally Posted by 86NovaII View Post
    Hi Greg
    Played phone tag with you a few times, but this has been on the backburner and I haven't gotten back to it.
    I think I may have an issue using a 4pt mount and may have to go to a rail mount.

    It looks to me like the front feet will bolt through right at the seam where the 2nd stringer is glassed in. I measured and the mounting plate will be just about at the seam. Bottom of pic is towards the front of the boat. Thoughts?
    Thanks!

    Click image for larger version. 

Name:	mount placement.jpg 
Views:	75 
Size:	6.4 KB 
ID:	533593
    Is there any reason why you cannot modify the stringer in order to utilize the 4 point mounting system?

  7. #5
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    May 2009
    Location
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    Default

    Quote Originally Posted by greg shoemaker View Post
    Is there any reason why you cannot modify the stringer in order to utilize the 4 point mounting system?
    Do you mean removing the matting near the end of the 2nd stringer, butting up a stringer piece going towards the transom, then glassing it all in? Would that be more trouble than it's worth compared to using a rail mount?
    Thanks!
    1978 Glastron/Carlson CV23; 429, Berk jet.

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