Pistons - Competition Diesel.Com

luke h · 06-14-2007, 07:00 PM

I was wondering what everybodys opinion on pistons was. Stock, 155*, CR, Marine, Arias, Ross? For a Street driven truck or a trailered truck?
Any opinions appreciated!
Luke

gotta12v · 06-14-2007, 11:04 PM

I have marine pistons in my truck. they have .080 fly cuts. they are also swain coated with tcb domes, and pc9 skirts. im just now getting the motor broken in, it is a daily driver, but it white smokes under 60* (enough to set off my smoke alarm in my house)

luke h · 06-15-2007, 09:03 AM

Do you know what compression you are running? Does the smoke clear up?
Luke

bonesmx2000 · 06-15-2007, 03:52 PM

what and where did u get your marine pistons please let me know mim building a 96 that is going to b strictly pulling truck only comp is going way way down any info would b greatly appreciated

sniperonhigh · 06-15-2007, 11:01 PM

Do you need to match injector spray patterns with the specific type of piston, i.e. marine piston needs marine 370 injector spray angle? What do different spray angles do, is it a timing thing or piston bowl thing?

joefarmer · 06-16-2007, 02:17 AM

Yes, the spray angle must be matched to the piston bowl. When you add timing, it's easier to accidentally spray outside the bowl which results in a less complete burn. I think I've got that right, but I could have missed that day in CompD school.

brnaodn.

sniperonhigh · 06-20-2007, 10:12 PM

Another piston question - why would you need to fly cut a marine piston when using say a factory or a Helix 2 camshaft. Is it needed for valve relief?

luke h · 06-20-2007, 10:45 PM

They wouldnt need to be flycut for a factory or a Helix 2. I intend to run a .450 cam which requires .080 intake and .060 exhaust fly cutting.

RacinDuallie · 06-21-2007, 06:51 AM

Quote:

Originally Posted by luke h

I was wondering what everybodys opinion on pistons was. Stock, 155*, CR, Marine, Arias, Ross? For a Street driven truck or a trailered truck?
Any opinions appreciated!
Luke

I like the Cummins pistons, cut, coated and balanced....

luke h · 06-21-2007, 09:41 AM

Jeff,
Which Cummins pistons do you prefer?

RacinDuallie · 06-21-2007, 09:56 AM

Right now I presently like the 04.5 CR units.... enough material in the top for bowl modifications.....

WAYNES WORLD · 06-24-2007, 03:44 PM

Quote:

Originally Posted by RacinDuallie

I like the Cummins pistons, cut, coated and balanced....

RacinDuallie,
For a DD , is the cuting neccesary?
Is the balance check a good idea anyway?

WAYNES WORLD

strokersmoker · 06-24-2007, 04:08 PM

is pistons what makes the trucks smoke at idle

WAYNES WORLD · 06-26-2007, 02:19 PM

LukeH,
I just ordered myMarine teflon coated skirt piston kit from City International for $128.25, rings included, [3800756]
I priced Cummins $177. I priced Scheids, $190. You do the math.

What I'm trying to say is shop around before you lay down the $$$$.

WAYNES WORLD

luke h · 06-26-2007, 06:52 PM

Tell me you didnt man! I had them priced from Internal Engine parts center out of jacksonville for $106.18 a hole. Part number is 286140-wr right. Hell they even sent me a complete catalog on Mahles. But I wont be able to get my motor going till I go back to work! (broken arm) But the bank is going to help me get the motor back together but dont want to refinance now since loan insurance is paying my truck payment!

Sure is nice when the loan officer calls and tells me not to pay my truck payment till I go back to work, glad i signed up for that!
Luke

WAYNES WORLD · 06-27-2007, 07:57 AM

Quote:

Originally Posted by luke h

Tell me you didnt man! I had them priced from Internal Engine parts center out of jacksonville for $106.18 a hole. Part number is 286140-wr right. Hell they even sent me a complete catalog on Mahles. But I wont be able to get my motor going till I go back to work! (broken arm) But the bank is going to help me get the motor back together but dont want to refinance now since loan insurance is paying my truck payment!

Sure is nice when the loan officer calls and tells me not to pay my truck payment till I go back to work, glad i signed up for that!
Luke

Luke,

i wish you would have said that 2 days ago when I was shopping for them.

But I did better than the Cummins guy.

Besides , shipping would have eaten up a lot of the difference.

WAYNES WORLD

luke h · 06-27-2007, 10:15 AM

Thats true, Whats you plans for a cam? If needed for the cam, are you going to fly-cut or just shave them?
Luke

06-14-2007, 07:00 PM	#1
luke h Name: luke h Title: Too Much Time Status: Not Here Join Date: May 2007 Member`s Gallery Posts: 298	Pistons I was wondering what everybodys opinion on pistons was. Stock, 155*, CR, Marine, Arias, Ross? For a Street driven truck or a trailered truck? Any opinions appreciated! Luke

06-15-2007, 09:03 AM	#3
luke h Name: luke h Title: Too Much Time Status: Not Here Join Date: May 2007 Member`s Gallery Posts: 298	compression Do you know what compression you are running? Does the smoke clear up? Luke

06-15-2007, 11:01 PM	#5
sniperonhigh Name: sniperonhigh Title: 12v Rookie Status: Not Here Join Date: Jun 2007 Location: Louisiana Member`s Gallery Posts: 107	Do you need to match injector spray patterns with the specific type of piston, i.e. marine piston needs marine 370 injector spray angle? What do different spray angles do, is it a timing thing or piston bowl thing? __________________ '01 F-250,4x4,SC,LWB, ATS stage 5 trans, Airdog, 5" h-max exhaust, Detroit lockers 6.0 intercooler install(OBS)&truck pics RDRCM#10

06-16-2007, 02:17 AM	#6
joefarmer Name: joefarmer Title: MR. Supreme Overlord Status: Not Here Join Date: Jul 2006 Location: ohio Member`s Gallery Posts: 6,137	Yes, the spray angle must be matched to the piston bowl. When you add timing, it's easier to accidentally spray outside the bowl which results in a less complete burn. I think I've got that right, but I could have missed that day in CompD school. brnaodn. __________________ brandon'); DROP TABLE Users;-- 1948 Dodge 1.5t 12v RH swap \| 99 F250 12v RE test rkt \| 11 X5 'no soup' \| 08 F250 CR RE swap \| 05 2500 CR 68 standalone firepunk.com

06-20-2007, 10:12 PM	#7
sniperonhigh Name: sniperonhigh Title: 12v Rookie Status: Not Here Join Date: Jun 2007 Location: Louisiana Member`s Gallery Posts: 107	Another piston question - why would you need to fly cut a marine piston when using say a factory or a Helix 2 camshaft. Is it needed for valve relief? __________________ '01 F-250,4x4,SC,LWB, ATS stage 5 trans, Airdog, 5" h-max exhaust, Detroit lockers 6.0 intercooler install(OBS)&truck pics RDRCM#10

06-14-2007, 11:04 PM	#2
gotta12v Name: gotta12v Title: Too Much Time Status: Not Here Join Date: Dec 2006 Location: Fayette MO Member`s Gallery Posts: 435	I have marine pistons in my truck. they have .080 fly cuts. they are also swain coated with tcb domes, and pc9 skirts. im just now getting the motor broken in, it is a daily driver, but it white smokes under 60* (enough to set off my smoke alarm in my house)

06-15-2007, 03:52 PM	#4
bonesmx2000 Name: bonesmx2000 Title: supportn the single moms Status: Not Here Join Date: Apr 2007 Location: indiana Member`s Gallery Posts: 494	what and where did u get your marine pistons please let me know mim building a 96 that is going to b strictly pulling truck only comp is going way way down any info would b greatly appreciated

06-20-2007, 10:45 PM	#8
luke h Name: luke h Title: Too Much Time Status: Not Here Join Date: May 2007 Member`s Gallery Posts: 298	Fly cut They wouldnt need to be flycut for a factory or a Helix 2. I intend to run a .450 cam which requires .080 intake and .060 exhaust fly cutting.

06-21-2007, 09:41 AM	#10
luke h Name: luke h Title: Too Much Time Status: Not Here Join Date: May 2007 Member`s Gallery Posts: 298	Jeff, Which Cummins pistons do you prefer?

06-21-2007, 09:56 AM	#11
RacinDuallie Name: RacinDuallie Title: Black Sheep Racing Status: Not Here Join Date: Apr 2006 Location: Supporting Northeast Diesel Racing Member`s Gallery Posts: 17,369	Right now I presently like the 04.5 CR units.... enough material in the top for bowl modifications..... __________________ Last edited by RacinDuallie; 06-21-2007 at 09:58 AM.

06-24-2007, 04:08 PM	#13
strokersmoker Name: strokersmoker Title: Too Much Time Status: Not Here Join Date: Jun 2007 Member`s Gallery Posts: 539	is pistons what makes the trucks smoke at idle

06-26-2007, 02:19 PM	#14
WAYNES WORLD Name: WAYNES WORLD Title: Too Much Time Status: Not Here Join Date: Dec 2006 Location: Justice, Il. Member`s Gallery Posts: 413	pistons LukeH, I just ordered myMarine teflon coated skirt piston kit from City International for $128.25, rings included, [3800756] I priced Cummins $177. I priced Scheids, $190. You do the math. What I'm trying to say is shop around before you lay down the $$$$. WAYNES WORLD

06-26-2007, 06:52 PM	#15
luke h Name: luke h Title: Too Much Time Status: Not Here Join Date: May 2007 Member`s Gallery Posts: 298	Tell me you didnt Tell me you didnt man! I had them priced from Internal Engine parts center out of jacksonville for $106.18 a hole. Part number is 286140-wr right. Hell they even sent me a complete catalog on Mahles. But I wont be able to get my motor going till I go back to work! (broken arm) But the bank is going to help me get the motor back together but dont want to refinance now since loan insurance is paying my truck payment! Sure is nice when the loan officer calls and tells me not to pay my truck payment till I go back to work, glad i signed up for that! Luke

06-27-2007, 10:15 AM	#17
luke h Name: luke h Title: Too Much Time Status: Not Here Join Date: May 2007 Member`s Gallery Posts: 298	True Thats true, Whats you plans for a cam? If needed for the cam, are you going to fly-cut or just shave them? Luke