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Unread 05-13-2013, 10:53 AM   #1
broken-wrangler
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Ported my throttle body.

So I'm in the middle of my motor swap, and figured since I'm waiting on a couple parts I might as port the throttle body on the replacement 4.0. It started out as a 60mm but ended up being about 65mm. I know it's not a big difference but I figured 30 minutes of time was worth a effort towards hp Gaines. I'll post a picture when my phone allows it

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Unread 05-13-2013, 10:59 AM   #2
broken-wrangler
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Inlet
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Unread 05-13-2013, 11:01 AM   #3
broken-wrangler
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Unread 05-14-2013, 11:37 AM   #4
JBTJ
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Quote:
Originally Posted by broken-wrangler View Post
So I'm in the middle of my motor swap, and figured since I'm waiting on a couple parts I might as port the throttle body on the replacement 4.0. It started out as a 60mm but ended up being about 65mm. I know it's not a big difference but I figured 30 minutes of time was worth a effort towards hp Gaines. I'll post a picture when my phone allows it
Won’t happen. However, will have better throttle response. Already tried it.
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Unread 05-14-2013, 11:46 AM   #5
broken-wrangler
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Well if anything it will be more efficient.
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Unread 05-14-2013, 12:14 PM   #6
JBTJ
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Originally Posted by broken-wrangler View Post
Well if anything it will be more efficient.
No. not even that. How do you think that can be?
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Unread 05-14-2013, 01:29 PM   #7
broken-wrangler
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Less resistance and breathing better. A bigger hole is better
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Unread 05-14-2013, 02:20 PM   #8
JBTJ
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Originally Posted by broken-wrangler View Post
Less resistance and breathing better. A bigger hole is better
An engine is only a fancy air pump. It can only suck in so much air, which is determined by the size of the valves, cam, and pistons. To increase air going into the engine you must increase these components first. If these components require a 60mm bore then increasing it to 100mm or 200mm won’t make any difference. Just as your lungs can only suck in so much air due to their capacity and a bigger mouth won't help. Good job doing it, but as I have already done it I can tell you it doesn’t help.
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Unread 05-14-2013, 02:48 PM   #9
Ironhead
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assuming everything else is stock on the motor he is swapping in
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