Next Block will be a Tomahawk !

Discussion in 'Race 400/430/455' started by nickbuickgs, Nov 24, 2017.

  1. nickbuickgs

    nickbuickgs nickbuickgs

    Lots of custom work to go all out .
     

    Attached Files:

  2. Bluzilla

    Bluzilla a.k.a. "THE DOCTOR"

    Nice! ............ What's the bottom look like?

    Larry
     
  3. nickbuickgs

    nickbuickgs nickbuickgs

    Channeled mains & TA Girdle . I post pictures once I get other things done
     

    Attached Files:

    Stage 2 iron and 300sbb_overkill like this.
  4. alvareracing

    alvareracing Platinum Level Contributor

    IMG_0001 (25).JPG IMG_0001 (25).JPG IMG_0010 (4).JPG alot of flow, and a lot of work.
     
    Stage 2 iron and 300sbb_overkill like this.
  5. nickbuickgs

    nickbuickgs nickbuickgs

    Looks like -4 an line ? Are you choking off the LH lifter bank & feed from manifold ? it appears so
     
  6. nickbuickgs

    nickbuickgs nickbuickgs

    I like the manifold !
     
  7. alvareracing

    alvareracing Platinum Level Contributor

    thanks, it took a lot of testing to get all four lines to equalize. I have spent a lot of time keeping internal hemorrhaging down to a minimum and it has paid in great dividends. With oil at 180 - 200* at idle it has 40 psi. I feel comfortable that I can spin it up without starvation. The last motor we did after 68 quarter mile passes , shifting at 6800-7K we tore it down for inspection and all the bearings still had all the coatings.
     
  8. StagedCat

    StagedCat Platinum Level Contributor

    [​IMG]

    Very impressive.....
     
    Stage 2 iron likes this.
  9. nickbuickgs

    nickbuickgs nickbuickgs

    So how did you stabilize the hemorrhage ? Pressure , bearing clearances , oil viscosity & pump set up ?

    Interested
     
  10. alvareracing

    alvareracing Platinum Level Contributor

    well, this is a loaded question but I will try to answer without a lot of detail. Besides all the basic stuff we have to do like bearing clearances and all that you mentioned above, I had to purchase 48 lifters to find 16 that would work. I found 8 to 9 tenth difference in body diameter, when you are targeting to keep .0015 to .0017 clearance between the body and the bores. Sixteen leaks rob tons of oil. Designating each lifter to a bore just like you would do to a piston in a bore, then restricting oil up to the top, keeps all the bearings real happy. Last motor I had done we took a copper tube and ran it down the main oil galley. then drilled a very small hole in at every lifter bore for feeding (restricting) the lifters. That was with solids back then but with the amount of work and tooling we had to do, which worked extremely well, we said we would never do it that way again. Old small block Mopar racers had to do this because Mopar feeds the lifters first just like the Buick. So, coming up with a manifold to feed the 3 center mains was the goal. We spent a lot of time designing one that would be fairly easy to mount and would result in keeping even pressure through out. The fourth hole just helps stabilize the driver side galley. I worry a bit about this Morrels but I have sure guaranteed I have given them the best chance to survive. Complete disassembly of them was done. two needed new cups and retainers to keep all sixteen the same internal size. Found those two to be .007 clearance internal, with my luck those two would've failed. So here we go make new parts and heat treat them. Plus they were dirty inside after the rep asked why are we taking them apart. You be surprised to see the amount of dirt/ crap inside. I have pictures of the inside to prove it. We do a lot of things most people don't do or talk about, but the bottom line is it's my motor and my investment and I will do everything possible to make sure it is protected and not take something or what someone says for granted without checking. hope this answers you question.
    Fernando
     
  11. Jim Weise

    Jim Weise EFI/DIS 482

    Nothing like buying brand new parts and having to fix them.. I have a hard time convincing customers they need to spend north of 1K on a set of hyd roller lifters.. hence why I quit using that brand.

    And for those who don't know, taking that lifter apart is not like taking a regular hyd lifter apart.. the tie bar rivet/body design requires that you remove the tie bar. Hope you put a better quality fastener back in the bars, I have had those break too, for no apparent reason.

    Good luck

    JW
     
  12. alvareracing

    alvareracing Platinum Level Contributor

    Jim, I wished those were available before I had committed myself on these. I would of paid even more to not go thru what we went thru. And I still have a lifter that I'm not sure if it's going to last. If your customers had go thru all this nonsense with lifters like you and I have seen, they would probably pay double. If anyone would sell oversize lifters for the factory blocks, that would solve a big problem with the oiling issues we see. We have been waiting for over 5 months on custom lifters from Isky that is stalling a project, and pray they come in tolerance.
    ps: as per the fastners, we used grade 1 tool steel to machine new buttons that are not riveted for future servicing. The way they should have been made to begin with. Believe me if they last I be surprised but it is not the lack of effort put into the whole project. We even considered making them from scratch, hate to do that because it is not cost effective but if we need too, it be done.

    Fernando
     
    Philip66 likes this.
  13. Jim Weise

    Jim Weise EFI/DIS 482

    So your getting new lifters from Isky.. those will most likely be Johnsons.. the good ones.

    I simply refuse to use any morel product, I can't afford to. Ends up being a lot less expensive buying better parts to begin with, even if I make less when I resell them. Not often that your business benefits from making less money, but this one of those times.

    JW
     
  14. sean Buick 76

    sean Buick 76 Buick Nut

    Did you consider adding bushings to the lifter bores or is it just the variation in the lifter diameters that are the main issue?
     
    Last edited: Nov 30, 2017
  15. nickbuickgs

    nickbuickgs nickbuickgs

    I clean my lifters as well . Would it have been better to resize the bores to say .872 ford maybe ? Anyway I kinda figured it was a bore issue . Thanks
     
  16. Bluzilla

    Bluzilla a.k.a. "THE DOCTOR"

    I often wondered that also, .... as well as having the opportunity to tune the lifter oil feed hole size directly in the bushing.

    Larry
     
    Last edited: Nov 30, 2017
  17. sean Buick 76

    sean Buick 76 Buick Nut

    "Aviation" was supposed to be "variation" love the spell check
     
  18. nickbuickgs

    nickbuickgs nickbuickgs

    I knew what you meant haha ! I have two Hydraulic lifter engines to do . One is going to get bushings . it has plenty of material to go oversized .
     
  19. Bens99gtp

    Bens99gtp Well-Known Member


    Nick what is net cc of those pistons with the little dome.....who made them
     
  20. Bens99gtp

    Bens99gtp Well-Known Member


    So just so I'm clear, the manifold and lines are there to help balance out and get good flow to the center mains........where does the oid originally come from.

    It looks like your pumping royal purple through there.......is this just so it's easy to see or is it the oil you use to run in the motor
     
    Last edited: Dec 27, 2017

Share This Page