2.0 question
Platinum Member
Joined: 12-06-2009
Posts: 11,718
From: Alabama
Just thinking..............
Administrator
Joined: 10-13-2011
Posts: 39,900
From: Welland,Ont Canada
LDK info based on LNF
https://zzperformance.com/products/ldk-long-block
LNF has sleeves, therefore tge LDK has the same
https://zzperformance.com/products/g...nf-short-block
how’s that for verification, trust me, I’ve done my research
https://zzperformance.com/products/ldk-long-block
LNF has sleeves, therefore tge LDK has the same
https://zzperformance.com/products/g...nf-short-block
how’s that for verification, trust me, I’ve done my research
Moderator
Joined: 05-01-2014
Posts: 8,499
From: California
Really doesn't prove anything, sleeves aren't mentioned on their LHU page. ZZP is referring to these as "gen 3", but wiki says that they are gen 2.
https://forum.hptuners.com/showthrea...-disable/page2
Same poster, seems to know what he's talking about.
He seems to be the only person on the internet that is even talking about the makeup of these cylinder walls.
Maybe someone has a shop manual for the LHU, can clear up whether they can be bored, or if they are sleeved.
https://forum.hptuners.com/showthrea...-disable/page2
Same poster, seems to know what he's talking about.
*note: if you have a Gen I LNF motor it will have bore sleeves. you cannot bore these as they will crack and cause massive internal damage. The new Gen II LDK/LHU block has solid bores and many other upgrades. Unfortunately lsj heads cannot be swapped onto them so you will have to use direct injection on these blocks. from aftermath chatter of boosted le5 and lsj's i believe the le5 has a not so strong block casting and will likely crack sooner under high boost (30+ psi) when compared to the lsj.
i have the build book which is cool but almost half the stuff they list for upgrades doesn't exist any more or has been further upgraded by many other companies. still a good reference book, i kept mine.
He seems to be the only person on the internet that is even talking about the makeup of these cylinder walls.
Maybe someone has a shop manual for the LHU, can clear up whether they can be bored, or if they are sleeved.
Administrator
Joined: 10-13-2011
Posts: 39,900
From: Welland,Ont Canada
LHU are based based on Gen 3 block
https://zzperformance.com/products/z...ng-short-block
you can see the lines around the sleeves
https://zzperformance.com/products/g...sj-short-block
a how to about removing and pressing sleeves
https://dartonsleeves.com/pdf/Ecotec_Manual.pdf
https://zzperformance.com/products/z...ng-short-block
you can see the lines around the sleeves
https://zzperformance.com/products/g...sj-short-block
a how to about removing and pressing sleeves
https://dartonsleeves.com/pdf/Ecotec_Manual.pdf
Moderator
Joined: 01-23-2009
Posts: 26,448
From: Fredericksburg,VA
From https://zzperformance.com/products/g...sj-short-block
From https://dartonsleeves.com/pdf/Ecotec_Manual.pdf
[QUOTE]Caution must be exercised as old sleeves are bored out to prevent tearing of aluminum in block and possible tool breakage; original sleeves are ribbed and cast in place[/QUOTE]
-Cylinder wall bracing that prevents sleeves from breaking out in high HP applications
[QUOTE]Caution must be exercised as old sleeves are bored out to prevent tearing of aluminum in block and possible tool breakage; original sleeves are ribbed and cast in place[/QUOTE]
Administrator
Joined: 10-13-2011
Posts: 39,900
From: Welland,Ont Canada
Same link I posted.and
Details of the new LHU block: http://www.gmpowertrain.com/Powertra...0turbo_v2.docx
or this link: https://www.dropbox.com/s/ei12w4hses...20turbo_v2.pdf
"...The main bearing bulkheads, which support the crank bearings, as well as the cylinder borewalls have been significantly strengthened to support increased engine loads. Refinements to the oil distribution system enable improved oil flow throughout the engine and an expansion of the coolant jacket, along with the use of cast-in-place bore liners, allows more precise boreroundness and improves the block’s ability to dissipate heat."
That explains.
Lots of differences to the LSJ/LNF block (oil pump, balance shafts, crank bearing dimensions, reversed head etc.) so not sure if this is swappable with and LSJ/LNF head.
from this link
https://www.cobaltss.net/forums/www....age=2&t=289219
Details of the new LHU block: http://www.gmpowertrain.com/Powertra...0turbo_v2.docx
or this link: https://www.dropbox.com/s/ei12w4hses...20turbo_v2.pdf
"...The main bearing bulkheads, which support the crank bearings, as well as the cylinder borewalls have been significantly strengthened to support increased engine loads. Refinements to the oil distribution system enable improved oil flow throughout the engine and an expansion of the coolant jacket, along with the use of cast-in-place bore liners, allows more precise boreroundness and improves the block’s ability to dissipate heat."
That explains.
Lots of differences to the LSJ/LNF block (oil pump, balance shafts, crank bearing dimensions, reversed head etc.) so not sure if this is swappable with and LSJ/LNF head.
from this link
https://www.cobaltss.net/forums/www....age=2&t=289219
Moderator
Joined: 05-01-2014
Posts: 8,499
From: California
LHU are based based on Gen 3 block
https://zzperformance.com/products/z...ng-short-block
you can see the lines around the sleeves
https://zzperformance.com/products/g...sj-short-block
a how to about removing and pressing sleeves
https://dartonsleeves.com/pdf/Ecotec_Manual.pdf
https://zzperformance.com/products/z...ng-short-block
you can see the lines around the sleeves
https://zzperformance.com/products/g...sj-short-block
a how to about removing and pressing sleeves
https://dartonsleeves.com/pdf/Ecotec_Manual.pdf
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