12V engine build opinions - Page 2 - Competition Diesel.Com

blackstacks · 02-13-2013, 12:18 PM

So if I do end up under 24* what benefits are there to running the 155* injectors? Better atomization or burn or??

scat · 02-13-2013, 02:22 PM

Quote:

Originally Posted by blackstacks

Protrusion is .025. (-/+ .0015)
Shallowest valve is .043 (varies from .043-.047)

With a stock compressed gasket thickness of .058 I should have between
.072-.078 piston to valve clearance, thats taking into account the extra thickness of the goldcaot on top (they say it adds about .003).

I shouldn't need to flycut the pistons and I should be able to run a stock thickness HG.

That is unless I did my calcs wrong??

Everyone who i talked to with my current motor build said if yours gonna get a cam dont get a "drop in" go with one that needs flycuts or keep the stock cam. I will also add too that there are better companies out there with cams other then the ones that blow up advertising.

*Smokem* · 02-13-2013, 02:41 PM

Ron runs that cam and has made 1200hp, I see no issue unless you wish to fail prey to another cam salesman's theories.

YOUNG GUNS15 · 02-13-2013, 03:44 PM

Quote:

Originally Posted by ClamDigger4

I think once you try anything over 24* timing you will end up dropping it back down.

from phone

Why do you say that?

blackstacks · 02-13-2013, 04:37 PM

Quote:

Originally Posted by scat

Everyone who i talked to with my current motor build said if yours gonna get a cam dont get a "drop in" go with one that needs flycuts or keep the stock cam. I will also add too that there are better companies out there with cams other then the ones that blow up advertising.

I think this cam could support more hp than I will ever see. The main reason I want I bigger cam is to spool quicker and lower egt's a bit. Im guessing the power gain would be minimal at best compared to a stock cam. I didn't want to run a huge high lift cam and worry about flycutting, high spring pressure and coil bind ect.. I know im going to have to replace the 60lb valve springs for probably some 165's already.

straight 6 roar · 02-13-2013, 05:08 PM

Quote:

Originally Posted by Smokem

Why add a $500 housing to a primary that is too big if your concerned about cost?

It costs $500 to get a 1.10 T6 and punch it out to 96mm?

87/1.10 would definitely be better but the vendor I got it through quoted $300 more. ..

*Smokem* · 02-13-2013, 05:12 PM

The dust pocket has to be machined to accept the larger 88/96mm cartridge, it is not as simple as contouring the housing to fit the wheel.

pic_jon · 02-13-2013, 06:29 PM

Quote:

Originally Posted by Smokem

The dust pocket has to be machined to accept the larger 88/96mm cartridge, it is not as simple as contouring the housing to fit the wheel.

When a 1.1 housing is machined for the 88/96 wheel, should it still be considered a 1.1 housing? Serious question. Reason I ask is because my 1.1 housing required some machining for the smaller 82/92, I imagine the larger 88/96 requiring a Lot more machine work.

straight 6 roar · 02-13-2013, 06:53 PM

Ah that's right forgot about the cartridge...

No the AR is lower than the 1.1 it was deemed as. Basically a redneck retrofit to make the 96/88 turbine more responsive at lower mass flow.

blackstacks · 02-14-2013, 01:57 PM

Thanks for all the input guys! I have a pretty good idea which direction to go with the build. I'm thinking about starting a build thread? What do you think? Are you guys tired of the same old build threads? I dont think it would be much different than most out there already. I pay very close attention to detail so there would be lots of data to post, measurements and calculations ect... I intend to put in on the local dyno to see what it will do when its up and running.

02-13-2013, 02:41 PM	#23
Smokem Name: Smokem Title: Turbler Status: Not Here Join Date: May 2006 Location: Iowa Member`s Gallery Posts: 5,565	Ron runs that cam and has made 1200hp, I see no issue unless you wish to fail prey to another cam salesman's theories. __________________ Infinite Performance

02-13-2013, 05:12 PM	#27
Smokem Name: Smokem Title: Turbler Status: Not Here Join Date: May 2006 Location: Iowa Member`s Gallery Posts: 5,565	The dust pocket has to be machined to accept the larger 88/96mm cartridge, it is not as simple as contouring the housing to fit the wheel. __________________ Infinite Performance

02-13-2013, 06:53 PM	#29
straight 6 roar Name: straight 6 roar Title: Too Much Time Status: Not Here Join Date: Nov 2010 Location: Oahu, Hawaii Member`s Gallery Posts: 1,031	Ah that's right forgot about the cartridge... No the AR is lower than the 1.1 it was deemed as. Basically a redneck retrofit to make the 96/88 turbine more responsive at lower mass flow. __________________ 2006 QCSB 2500 4x4 67/83/.90, +60% overs, TRE trans 1998 QCSB 2500 12 valve 4x4 Sold and missed

02-13-2013, 12:18 PM	#21
blackstacks Name: blackstacks Title: Green Behind the Ears Status: Not Here Join Date: Dec 2012 Member`s Gallery Posts: 90	So if I do end up under 24* what benefits are there to running the 155* injectors? Better atomization or burn or??

02-14-2013, 01:57 PM	#30
blackstacks Name: blackstacks Title: Green Behind the Ears Status: Not Here Join Date: Dec 2012 Member`s Gallery Posts: 90	Thanks for all the input guys! I have a pretty good idea which direction to go with the build. I'm thinking about starting a build thread? What do you think? Are you guys tired of the same old build threads? I dont think it would be much different than most out there already. I pay very close attention to detail so there would be lots of data to post, measurements and calculations ect... I intend to put in on the local dyno to see what it will do when its up and running.