| View previous topic :: View next topic |
| Author |
Message |
SingleCam93
Learners Permit
Joined: 26 Jul 2010
Posts: 10
|
 Posted: Tue Aug 03, 2010 11:48 am Post subject: head and block machine work ? |
 |
| okay my question is what kind of services should i get done to the head and block if the motor has a blown head gasket and been overheated before... btw im doing a full build for boost ! what machine work should i get done to the block to prep it for boost? money isnt a issue. Thanks |
|
| Back to top |
|
 |
beercandrifter
Knows Some Stuff About 240's!
Joined: 27 Oct 2006
Posts: 371
Location: Melbourne, Florida
|
| Posted: Tue Aug 03, 2010 12:02 pm Post subject: |
|
head - at the least new valve seals
hand the shop your short block parts, get your block magnafluxed to check for cracks and cleaned if you are worried about the overheating, good idea regardless
talk to the shop, ask them to fit your parts, balance the parts, assemble (may require bore for pistons)
you can have them check the head/top of block to verify they are within spec, if they want to machine those make sure they have your timing covers as well
the normal machining isnt too costly(clean, bore, deck), balancing adds to the price but is worth it the more you use the higher rpms
_________________
91 240sx Hatch:
Blueprinted block, Arias 8.8:1 pistons, Crower rods, 10mm head/main studs, Cometic HG, ACL bearings, Crower 264/264 cams, custom mounts, CxRacing Radiator w/ dual efans, d21 clutch/flywheel, holset hx35, 550cc sti injectors, rsenthalpy tune |
|
| Back to top |
|
|
SingleCam93
Learners Permit
Joined: 26 Jul 2010
Posts: 10
|
| Posted: Tue Aug 03, 2010 12:05 pm Post subject: |
|
| okay.. Thanks bro anybody in the florida area downsouth if possible that u would recommend ? |
|
| Back to top |
|
|
SingleCam93
Learners Permit
Joined: 26 Jul 2010
Posts: 10
|
| Posted: Tue Aug 03, 2010 12:08 pm Post subject: |
|
doesnt decking the block and heads higher the compression ?? cause im trying to build a low compression motor to boost the piss out of it.
soo
valve seals on head, magnafluxed & hotanked both head and block, deck head and block.. am i missing anything ? |
|
| Back to top |
|
|
bane
240sx Wannabe
Joined: 16 Dec 2008
Posts: 190
Location: TN
|
| Posted: Wed Aug 04, 2010 2:56 am Post subject: |
|
yes surfacing the block and head will up the compression. Most ka blocks i have seen do not need to be decked.
I believe miami240 is in south florida. You should contact him on here. |
|
| Back to top |
|
|
TinyT
Belongs To The TOP CONTRIBUTING MEMBERS!
Joined: 12 Oct 2006
Posts: 2651
Location: Oconomowoc WI
|
| Posted: Wed Aug 04, 2010 3:55 am Post subject: |
|
decking isnt going to significantly up you compression and is going to need to be done to true everything up. and also, low compression is so 2005. run some good compression in that thing and have it tuned well.
_________________
 |
|
| Back to top |
|
|
beercandrifter
Knows Some Stuff About 240's!
Joined: 27 Oct 2006
Posts: 371
Location: Melbourne, Florida
|
| Posted: Wed Aug 04, 2010 6:59 am Post subject: |
|
you may need to source an oversized headgasket (or the machine shop will for you) if it gets decked. Thats the only reason I am running a cometic at the moment, because felpro didnt make oversized gaskets for the application according to the shop
_________________
91 240sx Hatch:
Blueprinted block, Arias 8.8:1 pistons, Crower rods, 10mm head/main studs, Cometic HG, ACL bearings, Crower 264/264 cams, custom mounts, CxRacing Radiator w/ dual efans, d21 clutch/flywheel, holset hx35, 550cc sti injectors, rsenthalpy tune |
|
| Back to top |
|
|
Kamilitaryman
Dont Question My Nissan Knowledge
Joined: 11 Mar 2009
Posts: 530
Location: Buffalo, NY
|
| Posted: Wed Aug 04, 2010 7:53 am Post subject: |
|
| beercandrifter wrote: | | you may need to source an oversized headgasket (or the machine shop will for you) if it gets decked. Thats the only reason I am running a cometic at the moment, because felpro didnt make oversized gaskets for the application according to the shop |
+1
Im running a thicker Cometic (1.5mm) as well due to resurfacing. Also, make sure they machine your front timing covers with the block/head as well.
_________________
'95 Zenki S14.5 - RIP
2nd '95 Zenki - KA24DE-T in progress http://www.ka-t.org/forums/viewtopic.php?t=40793
00 Subaru Impreza RS - daily/winter
 |
|
| Back to top |
|
|
eazye2000
Dont Question My Nissan Knowledge
Joined: 16 Jan 2007
Posts: 658
Location: Inverness, FL
|
| Posted: Wed Aug 04, 2010 8:12 am Post subject: |
|
Yup, they make a 2mm gasket if I'm not mistaken. That's what I have. Or a .078 I think.
Didn't deck or plane anything. Slapped it on there. With 8.8 pistons, I'm lucky if I'm above 8:1 lol
_________________
 |
|
| Back to top |
|
|
Truck
Knows Some Stuff About 240's!
Joined: 22 Apr 2008
Posts: 263
Location: Austin, Texas
|
| Posted: Wed Aug 04, 2010 8:30 am Post subject: |
|
Before you do any machine work, get it checked to see if everything is within spec. Don't machine junk parts.
_________________
Squeaks and squeals is the name of my wheels. |
|
| Back to top |
|
|
Kamilitaryman
Dont Question My Nissan Knowledge
Joined: 11 Mar 2009
Posts: 530
Location: Buffalo, NY
|
| Posted: Wed Aug 04, 2010 8:32 am Post subject: |
|
| Truck wrote: | | Before you do any machine work, get it checked to see if everything is within spec. Don't machine junk parts. |
+1
_________________
'95 Zenki S14.5 - RIP
2nd '95 Zenki - KA24DE-T in progress http://www.ka-t.org/forums/viewtopic.php?t=40793
00 Subaru Impreza RS - daily/winter
|
|
| Back to top |
|
|
car6on14
Learners Permit
Joined: 11 Jun 2009
Posts: 18
Location: Scranton PA
|
| Posted: Fri Aug 06, 2010 6:52 am Post subject: |
|
I just spun a bearing on my motor that was supposedly built... forged rods and pistons... What kind of work do u guys get done to ur cranks? anyone cryo it? i heard that they arent well balanced from the factory? im thinking the original owner didnt get any re balancing.
_________________
1993 240sx Coupe
KA-T - 3076 - AEM standalone
http://www.cardomain.com/ride/3823450/1 |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Timeslips
Register
Profile
Log in to check your private messages
Log in
