timing with higher than normal boost
Sep 8, 2010 | 09:18 AM
#11
GFYS and STFU
iTrader: (8)
Joined: Jan 2007
Posts: 13,870
Likes: 4
From: Here and sometimes there too.
Yeah, I was gonna say the same as Kyle, Parish always preferred more boost to more timing. He was running 22 psi I think with conservative-ish timing.
I'm curious about the OP's mid-mounted turbo, is that Trick's set-up?
I'm curious about the OP's mid-mounted turbo, is that Trick's set-up?
Sep 8, 2010 | 10:23 AM
#12
Actually Jake, If I remember right, Parish came to the same conclusion Chris did, 
More boost is better and safer then more timing. 
Chris's truck is a bit of a dyno queen, 
Last time I talked to him he had well over a 100 pulls on the dyno with it!
PS, you need more timing on your truck,
More boost is better and safer then more timing. Chris's truck is a bit of a dyno queen, Last time I talked to him he had well over a 100 pulls on the dyno with it! PS, you need more timing on your truck,
I have some more timing coming in the mail. AlkyControl
Sep 8, 2010 | 05:08 PM
#13
Damn Todd, Think of it like this... Timing only helps you burn the fuel and air you already have more efficiently. Too much timing will result in less power as now too much of the burn is happening BEFORE the piston goes over TDC and into the power stroke. It can also lead to to high of combustion pressure which will cause the fuel mix to explode instead of burn (detonation).Now, when you add boost, your adding fuel too, so you have MORE fuel and air to burn in the power stroke, so with the proper timing, you will always make more power with more boost.
Sep 8, 2010 | 06:19 PM
#14
I thought about that quite a bit and figured there had to be a sweet spot for timing. I looked into it and found that most NA engines sweet spot is at 28° timing, motors on boost a little less. I just need to get a bit closer to that sweet spot.
Sep 8, 2010 | 09:00 PM
#16
It's a shortened STS kit with turbo right next to trans.
Sep 8, 2010 | 11:55 PM
#17
Actually Jake, If I remember right, Parish came to the same conclusion Chris did, More boost is better and safer then more timing. Chris's truck is a bit of a dyno queen, Last time I talked to him he had well over a 100 pulls on the dyno with it!
PS, you need more timing on your truck,
More boost is better and safer then more timing. Chris's truck is a bit of a dyno queen, Last time I talked to him he had well over a 100 pulls on the dyno with it! PS, you need more timing on your truck,
The key is to find the sweet spot for timing at each boost level. For some reason my truck loves 19-20 degrees of timing at anything over 8psi. I have tried 22 degrees at 14psi but it didn't pick up anything so I left it at 19 and called it a day. I would not try anything over 16-17 degrees without meth and 93 octane. Next time I put it on the dyno I'm going to run the timing up a little more at a safe boost level like 10psi and see what happens.As for being a dyno queen. I ran for the first time in over a year tonight and went 11.90@113 with only 11psi and 2000'DA. Next week I'm going to shoot for 10's.
Sep 8, 2010 | 11:58 PM
#18
Yep! Damn Todd, Think of it like this... Timing only helps you burn the fuel and air you already have more efficiently. Too much timing will result in less power as now too much of the burn is happening BEFORE the piston goes over TDC and into the power stroke. It can also lead to to high of combustion pressure which will cause the fuel mix to explode instead of burn (detonation).
Now, when you add boost, your adding fuel too, so you have MORE fuel and air to burn in the power stroke, so with the proper timing, you will always make more power with more boost.
Damn Todd, Think of it like this... Timing only helps you burn the fuel and air you already have more efficiently. Too much timing will result in less power as now too much of the burn is happening BEFORE the piston goes over TDC and into the power stroke. It can also lead to to high of combustion pressure which will cause the fuel mix to explode instead of burn (detonation).Now, when you add boost, your adding fuel too, so you have MORE fuel and air to burn in the power stroke, so with the proper timing, you will always make more power with more boost.
