Chapter GMW | E30 LS1 (starting on post #1427)
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On compressor maps, the y-axis is the pressure ratio which is (intended boost pressure + 14.7psi)/14.7psi. so a pressure ratio of 2 equates to ~15psi boost pressure and a pressure ratio of 3 would be ~30psi etc.
On the x-axis, the target horsepower can be approximated by multiplying the flowrate in lb/min by 10. so 40lb/min being about 400whp. You want to land in the middle of the highest efficiency island.
TCD or anyone that isnt a total noob with turbos, please correct me and expound, I am here to learn.
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On compressor maps, the y-axis is the pressure ratio which is (intended boost pressure + 14.7psi)/14.7psi. so a pressure ratio of 2 equates to ~15psi boost pressure and a pressure ratio of 3 would be ~30psi etc.
On the x-axis, the target horsepower can be approximated by multiplying the flowrate in lb/min by 10. so 40lb/min being about 400whp. You want to land in the middle of the highest efficiency island.
TCD or anyone that isnt a total noob with turbos, please correct me and expound, I am here to learn.
I was not calculating my pressure ratio correctly. 20psi would put me at 2.3 PR and that puts me right in the honey hole for the turbo! Well, maybe I guess.
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@DrLeadFoot
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Under the blankets trying to stay warm.
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@DrLeadFoot
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Just got these little guys for the trans. mounts. Now to order up some motivation.
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@DrLeadFoot
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Pull the trigger! Spring will be here sooner than we know it!
@DrLeadFoot
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say goodbye to your teeth
Actually let me know how the vibration is. Better yet, I need a ride when they are installed.
As for motivation. Get some warm clothes on, Get the jack out, put a stand on one side, Get your 12 or 13mm wrenches out, support the trans with the jack, replace them, and be done with it in under 15 minutes.
I dare you.
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say goodbye to your teeth
Actually let me know how the vibration is. Better yet, I need a ride when they are installed.
As for motivation. Get some warm clothes on, Get the jack out, put a stand on one side, Get your 12 or 13mm wrenches out, support the trans with the jack, replace them, and be done with it in under 15 minutes.
I dare you.
Maybe tomorrow. Maybe!
I got my charger for the gopro and can't wait to get some footage.
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@DrLeadFoot
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YES! please post up lots of car videoss
This snow needs to go somewhere. With this cold and salt on the roads there will be Boat loads of wheel spin.
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@DrLeadFoot
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You are driving that thing in the salt???
Not daily as of now. Here and there hell yeah! I can't let her get stiff in the garage! Gotta stretch her out!
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@DrLeadFoot
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http://www.youtube.com/watch?v=tgUaEk6lX-E
Lots of wheel spin and feathering the throttle.
@DrLeadFoot
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@DrLeadFoot
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O__O MORE PLEASE.
I'm going to wait to get some more. Freaking out trying to keep it straight in this cold weather!
@DrLeadFoot
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@DrLeadFoot
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awesome!! @__@
when you mount it backwards, try to avoid wind noise.
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