| Author |
Message |
Joe (Homermandy)
Registered Member
Username: Homermandy
Post Number: 6
Registered: 11-2006
Posted From: 69.133.104.177
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, May 14, 2007 - 9:56 pm: | |
My engine is a DDEC2 350HP 6v92. It currently has a Garrett TV-7512 with an A/R of .75. When I called Detroit Diesel and gave them my Engine Serial Number they told me the engine should have the TV-7512 with an A/R of 1.08. So I am wondering why my turbo is different and what effect the A/R difference would make on my engine. I know the lower A/R is quicker spool up, but does the maximum boost change accorind to the A/R? Thanks |
Hans (Buellhans)
Registered Member
Username: Buellhans
Post Number: 37
Registered: 2-2007
Posted From: 199.60.181.9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, May 15, 2007 - 1:16 pm: | |
Difference is in the engine emmisions |
Geoff (Geoff)
Registered Member
Username: Geoff
Post Number: 907
Registered: 12-2002
Posted From: 71.211.87.194
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, May 15, 2007 - 6:06 pm: | |
Joe--
The A/R of .75 is on the aluminum intake horn, the exhaust side is the one that is going to be 1.08 (or ?), and that is the side they use to size the turbo A/R. As usual the parts guys at Detroit don't know enough to tell you what to look for. |
Joe (Homermandy)
Registered Member
Username: Homermandy
Post Number: 7
Registered: 11-2006
Posted From: 69.133.104.177
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, May 15, 2007 - 7:21 pm: | |
Thanks Geoff. |
Hans (Buellhans)
Registered Member
Username: Buellhans
Post Number: 39
Registered: 2-2007
Posted From: 199.60.181.9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, May 16, 2007 - 12:45 pm: | |
One turbo is pre smog . They came out in th later years with different pistons and change up the turbo for the emmission targets > we changed up all of our motors with somg leagal stuff ,cams pistons and tubo and I do belive the AR changed on the turbo housings > Ido belive the boost went up and the copression went down |
J.C.B. (Eagle)
Registered Member
Username: Eagle
Post Number: 114
Registered: 12-2000
Posted From: 74.130.33.78
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, May 17, 2007 - 2:46 pm: | |
Geoff glad to see you back.
JCB |