Page 5 of 5 FirstFirst ... 345
Results 41 to 48 of 48

Thread: FOD PROJECT PISTON SLAP + BLOW BY BE GONE + 1 = 4 & THICK RING FUN EXPERIMENT!

  1. #41
    NostraJackAss Jack@European_Parts's Avatar
    Join Date
    Jan 2014
    Location
    1001 State Route 17K Montgomery New York 12549
    Posts
    19,566
    Post Thanks / Like
    Follow up tear down and cleaning..........lite hone and decks von 3M cookie.



    Cross hatches fast .......good good Ja ja....



    Lower deck cookie time......ja



    cookie good enough now time to get tanked.......



    Dress for pause to retain measurements stop corrosion.....bla bla

    Time to start custom bore, offsets....stroke shaving rod length... plus ring gaps on fly because nothing in here will belong going forward in this carcass coming back from the dead.

    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  2. Likes Uwe, jyoung8607, DneprDave liked this post
  3. #42
    NostraJackAss Jack@European_Parts's Avatar
    Join Date
    Jan 2014
    Location
    1001 State Route 17K Montgomery New York 12549
    Posts
    19,566
    Post Thanks / Like
    Before I do anymore cleaning I'm taking some measurements & comparing data to surmise what I'm going to shave, sleeve or add....

    As can be seen with the 2.0 crank, the crank hits the skirts and makes way to show lower oil ring.

    This would be unacceptable.






    Deck is also not ideal at current settings and unacceptable for 2.0 crank + rod.




    A 1.8T crank also again reveals too much above deck as can be seen below.






    Clearance of the skirt to crank is possible on 1.8T crank as can be seen below still issue for lower oil ring.



    Piston compare of 2.0 to donor to be mangled to fit for perspective.







    It is my opinion that the short skirts of the pistons may be better for high rpm and weight reduction, however, they are not useful in an RPM that would aid useful life or power to create clarity of combustion and are short lived, history also shows us this.

    What I clearly see is skirt slap and rings wearing on an angle due to chatter resonance from piston not being held in bore consistent, they are susceptible to carbon and pitting as a result hence blow by!

    Talk about planned obsolesce.....

    The rings are indeed with carbon, pitting and pistons with skirt slap burns.

    It is with these small surface area contacts, the rings in contact with bore, fail to seal proper and permit oil into combustion process or fuel and gasses into the sump.

    Considering a turbo motor will just blow the gasses into the sump, I see a huge advantage here in weight follow through inertia and the seal of the chamber even if I deleted the lower ring.

    Now I may have to grind the skirt of this piston or add a sleeve to block and this is all entirely possible.

    Considering other custom settings and hardware in my thoughts with junk.

    It's more fun to use stuff already in production and mod it or cross it to do what you want and sure is cheaper.
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  4. #43
    NostraJackAss Jack@European_Parts's Avatar
    Join Date
    Jan 2014
    Location
    1001 State Route 17K Montgomery New York 12549
    Posts
    19,566
    Post Thanks / Like
    Sleeve idea nixed due to oil gallery too close to bore.

    I think this is quick and dirty for bypass of oil sprayers.

    Yeah more engine porn .....








    So guys are going to be like WTF Jack, why are you doing that, sure sounds contradictory?

    Here is the thing....... oil is friction and so are hydro-static pressures.

    Too much oil pressure will grab a crank or rod and stop it from turning or alter valve timing for lash changes in lifters or certain vario conditions and temps can soar as a result.

    Understanding hydro-statics is important and as a farm boy I understand them well with all the heavy equipment built or maintained in life.

    Oil sprayers or even in conjunction with rifle bore on a rod to connecting rod to crank is way dumb for anything performance in mind and in tests I have done violate the spirit of useful life or function as stated.

    The original spirit of the sprayers was to reduce temps of the pistons related to mid evil knock control systems and SMOG related in addition to lubrication of pin and bore well allegedly!

    While in original spirit or intent this maybe noble on paper in some SAE publication, however, I can tell you it is wrong and my by own verification why motors explode at track or under extreme endurance when pushed!

    When you lose oil PSI at crank mains or rods and or oil sprayers, especially under certain conditions you lose big time in head area and those are even more critical friction components you just dont play games with.

    Because the blocks are for most part cast iron and the heads aluminium they expand at different rates.

    As you can see the OEM's put tremendous friction requirements on valve trains now & with variable cam, lift timing or the HPP and fail to adapt around existing issues by missing their own basics.

    Fact when removing oil being sprayed in rod or pop off sprayers, you lower temps under normal and race driving conditions due to added needed oil getting to valve train under conditions under constant load ( cruising speeds ) or increasing load offsets.

    Guys would add external oil coolers it was such a problem in the early engines because an MFA would reflect temps in the 300 range on a hot day under normal driving WTF!

    Deleting the sprayer's cut temps literally in half and GHG at tailpipe were far better believe it or not.....

    I cap them off ......... A sprayer can stick open from contaminated oil, sludge and ethanol content fuels that forces them to be stuck open!

    If the sprayer jets ball sticks open, it's not a good time for the engine since in main oil gallery, especially the cylinder head!

    Getting the harmonious oil PSI in all ranges with adequate volume are key to reducing friction, aeration and lowering GHG's.

    Too much oil sump level or spraying around only assists with a failure of cross contamination and temperature increases.


    Let's dissect a sprayer......

    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  5. #44
    NostraJackAss Jack@European_Parts's Avatar
    Join Date
    Jan 2014
    Location
    1001 State Route 17K Montgomery New York 12549
    Posts
    19,566
    Post Thanks / Like
    I'm curious if a late 1.4T crank would suffice to assist fitments and mod fun further with reluctor adaptation or update to other rear seal cover?

    Hmmmmm thinking out loud!
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  6. #45
    NostraJackAss Jack@European_Parts's Avatar
    Join Date
    Jan 2014
    Location
    1001 State Route 17K Montgomery New York 12549
    Posts
    19,566
    Post Thanks / Like
    Diff rods indeed permit a different rock point of 2.5 MM

    Believe it or not the center of that dome piston is above deck by .75MM






    Yeah things would be extremely tight on bottom end too and that lower ring will get NIX'd

    Still de-stroked ......

    Could in theory still take advantage of larger ring sealing surfaces and extended skirt length for inertia to prevent resonance slap.


    Last edited by Jack@European_Parts; 06-01-2020 at 07:46 PM.
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  7. Likes Uwe liked this post
  8. #46
    Verified VCDS User
    Join Date
    Jul 2014
    Location
    UK
    Posts
    218
    Post Thanks / Like
    Hi Jack,
    I am slightly confused where you have got to at the moment. Looking at the last image, is a longer rod and a shorter stroke crankshaft a possibility to keep the bottom ring lands in the cylinder and reduce the piston projection from the deck? What about easing the piston skirt where you have the crank webs fouling, so you have a slight slipper piston effect but the thrust faces are the same length, which is I think what you consider important?
    Regards HMC

  9. #47
    NostraJackAss Jack@European_Parts's Avatar
    Join Date
    Jan 2014
    Location
    1001 State Route 17K Montgomery New York 12549
    Posts
    19,566
    Post Thanks / Like
    That's the plan indeed.
    I am in process of getting another crank with even shorter stroke and going longer rod, that was where I left off waiting for parts from freight still held up.

    I want to see what a 1.4 will reveal at 80 and maybe try 140mm rods vs current 136mm

    Than maybe utilize the rear end seal reluctor for G28
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  10. #48
    NostraJackAss Jack@European_Parts's Avatar
    Join Date
    Jan 2014
    Location
    1001 State Route 17K Montgomery New York 12549
    Posts
    19,566
    Post Thanks / Like
    4MM more............

    Things are still tight!

    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •