Is 10.4:1 compression on forged internals too high for boost?
08-08-2004, 04:49 PM
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Is 10.4:1 compression on forged internals too high for boost?
Im getting down to building my B16 motor for boost and was wondering if 10.4 is too high?
I know its the stock compression for a JDM gen 2 b16a, and was wondering what kind of results I would get.
I will also be swapping over to a gsr head in the near future, so i was thinking about having the bottom end set up for 10:1 with the b16 head adn then when i swap over the better flowing gsr head, the compression will be bumped up another 2 points.
I am thinking of going this route because peopl are making some good power with stock internals/stock compression, so why not strengthen it, and run the same compression.
Does this make sense?
I know its the stock compression for a JDM gen 2 b16a, and was wondering what kind of results I would get.
I will also be swapping over to a gsr head in the near future, so i was thinking about having the bottom end set up for 10:1 with the b16 head adn then when i swap over the better flowing gsr head, the compression will be bumped up another 2 points.
I am thinking of going this route because peopl are making some good power with stock internals/stock compression, so why not strengthen it, and run the same compression.
Does this make sense?
08-08-2004, 04:59 PM
#2
Re: Is 10.4:1 compression on forged internals too high for boost? (B16B)
You can, but it really depends upon the goals that you have for the setup
If it is drag raceing, and slight street racing, lowering the compression not only allows more boost but also allows more margin for error from your tuner on the tuning management that you use.
If it is road race, you can keep the higher compression, run less boost, and let the motor do most of the work. But this could allow for small errors in tuning to become big ones if not done properly.
You can go down to 9.5:1 and still maintain that higher compression you'd like and still maintain and increase boost. Seems to be the best of both worlds.
If it is drag raceing, and slight street racing, lowering the compression not only allows more boost but also allows more margin for error from your tuner on the tuning management that you use.
If it is road race, you can keep the higher compression, run less boost, and let the motor do most of the work. But this could allow for small errors in tuning to become big ones if not done properly.
You can go down to 9.5:1 and still maintain that higher compression you'd like and still maintain and increase boost. Seems to be the best of both worlds.
08-08-2004, 07:55 PM
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Re: Is 10.4:1 compression on forged internals too high for boost? (B16B)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16B »</TD></TR><TR><TD CLASS="quote">
I am thinking of going this route because peopl are making some good power with stock internals/stock compression, so why not strengthen it, and run the same compression.
Does this make sense?</TD></TR></TABLE>
No you'll be able to make more power on lower compression.
10.4:1 + boost you better be running race gas all the time.
On pump gas 8.5-8.8:1 will be good and give you some room for tuning error.
I am thinking of going this route because peopl are making some good power with stock internals/stock compression, so why not strengthen it, and run the same compression.
Does this make sense?</TD></TR></TABLE>
No you'll be able to make more power on lower compression.
10.4:1 + boost you better be running race gas all the time.
On pump gas 8.5-8.8:1 will be good and give you some room for tuning error.
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