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Old 08-01-2014, 01:49 PM   #261
YOUNG GUNS15
 
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Quote:
Originally Posted by 92dak_r6 View Post
Care to elaborate?
X2 for those of us always looking for that extra little bit.
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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 08-01-2014, 01:56 PM   #262
murphy41
 
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Quote:
Originally Posted by 92dak_r6 View Post
Care to elaborate?
Its all a matter of WHEN the valve starts open or is totally closed (exhaust). Reliefs are cut mainly because of Duration and LSA. Not directly related to actually valve lift.
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Old 08-01-2014, 01:57 PM   #263
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Quote:
Originally Posted by murphy41 View Post
Its all a matter of WHEN the valve starts open or is totally closed (exhaust). Reliefs are cut mainly because of Duration and LSA. Not directly related to actually valve lift.
So who's truck is running what LSA and doing well?
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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 08-01-2014, 02:04 PM   #264
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Quote:
Originally Posted by YOUNG GUNS15 View Post
So who's truck is running what LSA and doing well?
Its a combination of Duration and LSA. Usually your higher lift cams are a tighter LSA and longer duration. The exhaust valve will actually still be open while the intake valve cracks open, and will use minimal amounts of boost pressure to finish pushing the exhaust out of the cylinder on the intake stroke. (Valve overlap) This is where your reliefs come in.
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Old 08-03-2014, 08:47 PM   #265
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Well the pieces in the pan didn't give this motor much time to live, it died passing some jack wagon tourists just a half hour from home. Was able to limp it onto a trailer and get it home without anything exiting the block

I'm having the 286210 pistons I bought cut for .150 valve reliefs which should put me right at 16:1 cr ratio. I'll be dropping off my block tomorrow after work to have cam bushings installed. If everything goes well I should have a short block built in just a couple weeks. Still need to source rod bolts and main studs. Who's cheapest?

Kind of convenient I already have a motor essentially 80% ready to go!
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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 08-03-2014, 08:53 PM   #266
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How did you figure your compression drop with the reliefs?
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Dying is always a way bigger concern than egt's...
 
Old 08-04-2014, 10:21 AM   #267
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I could use mains myself. How much you paying for cam bushings
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Old 08-04-2014, 11:02 AM   #268
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Quote:
Originally Posted by TheSilverBullet View Post
How did you figure your compression drop with the reliefs?
For every .100 its a full point drop. So from 17.5:1 down to 16.5:1. The other .050 would be a half point.
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Old 08-06-2014, 12:15 AM   #269
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Where do you go for machine work?
 
Old 08-06-2014, 09:27 AM   #270
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Young gun's 94 build thread

Quote:
Originally Posted by 56cummins View Post
Where do you go for machine work?
Murphy41 (Brandon Murphy) works for outlaw diesel repair in Ogden Utah and they use a machine shop up there. They are doing the valve reliefs and the cam bushings. Most of the normal non-hi po stuff I use cleggs here in Orem Utah. Mostly because I could literally pull a wagon with a bunch of parts in it over to them from my apartment...
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-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp

Last edited by YOUNG GUNS15; 08-06-2014 at 09:31 AM.
 
Old 09-22-2014, 12:42 AM   #271
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Quote:
Originally Posted by YOUNG GUNS15 View Post
Murphy41 (Brandon Murphy) works for outlaw diesel repair in Ogden Utah and they use a machine shop up there. They are doing the valve reliefs and the cam bushings. Most of the normal non-hi po stuff I use cleggs here in Orem Utah. Mostly because I could literally pull a wagon with a bunch of parts in it over to them from my apartment...
.. Thas Great, I used to live down the street froma big race engine place, I could always tell when they were donna dyno a BIG engine..

The biggest I was there for was a 632 BBC with BIG Indy heads a 2 stages of nitrous, All I can say was WOW, 6" Exhausts all the way to 8K, tha sounded AWESOME !!!
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Old 10-02-2014, 07:25 PM   #272
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So there hasnt been much progress at all, obvious by the lack of posting. The crankshaft and engine rebuild kit were stolen out of my jeep about two months ago and that really set me back, but I'm making some headway! I was able to pick up the block and head from Brandon yesterday. Decided to have the head fire ringed, along with a 3 angle valve job. No porting as of now, I know, it needs to be done! I am just holding out for a Hamilton head sometime down the road, so saving a few dollars there.

As for whats left, there is a laundry list.... I am still waiting on pistons to be cut, still need to purchase the larger 1.3'" common rail tappets, truck needs a dakota digital box to get the speedo working, I need to buy billet freeze plugs and build a coolant bypass, I need to setup my second airdog pump, etc etc. The list goes on. Hopefully in the next couple weeks I'll have some worth while updates.
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-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 10-03-2014, 11:56 AM   #273
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I've sourced out Billet Freeze Plugs for a killer deal Spencer. When your ready let me know. And I'll let ya know what your price will be on them.
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Old 10-10-2014, 08:47 AM   #274
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Here are some things I've accumulated.

eBay freeze plugs for 80$ shipped

Click the image to open in full size.

Great quality, I'm happy to see that they didn't just throw a black o-ring on it and call it a day.
Click the image to open in full size.

Rod bolts and main studs
Click the image to open in full size.

MOAR NOS
Click the image to open in full size.

Some sort of micro coated bearings, these are aparretly the shiznit. Got them for free so I am not complaining.
Click the image to open in full size.


Click the image to open in full size.
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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 10-10-2014, 10:04 AM   #275
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You better get to work and quit posting pictures of stuff, anyone can buy/acquire parts, it takes a real enthusiast to get everything installed in-time to compete in the diesel events.

UDP's dyno is coming up quick, Saturday November 1st, just 3 weeks away!
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Old 10-10-2014, 10:14 AM   #276
YOUNG GUNS15
 
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Quote:
Originally Posted by Big Blue24 View Post
You better get to work and quit posting pictures of stuff, anyone can buy/acquire parts, it takes a real enthusiast to get everything installed in-time to compete in the diesel events.

UDP's dyno is coming up quick, Saturday November 1st, just 3 weeks away!
I hope you are just messing with me, I've been trying hard to get it together, I've just been plagued with problems since i started this build. Stolen parts, pistons taking two months to have valve reliefs cut, etc. It's not gonna happen in three weeks, if it does it will be last minute. There is still too much to do.

Got a new torque wrench the other day, anxious to test it out on my motor!

Click the image to open in full size.
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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 10-10-2014, 11:45 AM   #277
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Quote:
Originally Posted by murphy41 View Post
For every .100 its a full point drop. So from 17.5:1 down to 16.5:1. The other .050 would be a half point.
Bowl diameter must be taken into account when determining valve relief cc's, there is no preset value for a given depth.
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Old 10-11-2014, 09:17 AM   #278
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Look I installed something!!


Much more secure than JB welded freeze plugs And they just look good!
Click the image to open in full size.
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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 10-11-2014, 01:04 PM   #279
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Shoulda painted the block first!
 
Old 10-11-2014, 01:07 PM   #280
YOUNG GUNS15
 
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Quote:
Originally Posted by kleann View Post
Shoulda painted the block first!
I did it in spite of wills comment. Lol I'll remove them when it comes time to paint!
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-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
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