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Old 09-09-2006, 12:10 PM   #1
TysCb7
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ENG: Drilling/tapping prelude transmission to fit an accord

I know the information on this is in the swap FAQ, but I figured a DIY could help clear up any confusion.
Tools:
10 x 1.25mm tap
11/32 drill bit for METAL
WD-40

I'm not responsible for your mistakes.

tools



here are the prelude studs in their original location. (empty holes are where you want them to be)



start by removing the studs, you can either clamp the bottom of the stud (NOT the threads) with vice grips, or you can get two of the nuts and tighten them against each other, then when you loosen the bottom nut it puts pressure on the top thus removing the stud.



now you want to enlarge the holes you are going to tap, you do this with an 11/32 drill bit made for METAL. Note: I put a little sticker on the drill bit that way I knew how deep to drill.



once both holes are enlarged it is time to tap them. I myself have never had any experience with tapping so I figuered a good time to learn would be with a m2b4 tranny. I found the tapping process to be VERY easy. If you take your time and don't rush anything you will be fine. You want the tap to be as true and and straight as possible that way you don't end up with crooked studs. I also used a small open ended wrench on the tap for more room. When tapping back the tap out about every 2-3 turns to remove any shavings, using WD-40 on this step definitely helps...



once both holes are tapped screw the studs in, the prelude tranny is now ready for an accord.



all done.

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Old 09-09-2006, 12:16 PM   #2
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Nice write up!
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Old 09-09-2006, 12:46 PM   #3
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Just curious. You bought an M2B4 for your F22? or are you running an H?
Nice write up too, the pics really bring things into perspective.
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Old 09-09-2006, 01:16 PM   #4
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not bad man. Great writeup!
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Old 09-09-2006, 01:16 PM   #5
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damn, nice write up. I was gona do it when i got my m2s4 tranny. looks like you beat me to it tho, good job.
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Old 09-09-2006, 01:27 PM   #6
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Very nice write-up. Funny how just the other day I was wondering about this. It's a step that is often overlooked but critical.
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Old 09-09-2006, 03:47 PM   #7
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this is also the process for 5th gen trannys....

i used oil to lube....

depth was another question i had when i did it....

as fas as the thread pitch, u can use any, as long as u have the proper bolts.........

very nice man...

make sure u do this as straight as possible..
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Old 09-10-2006, 11:58 AM   #8
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Quote:
Originally Posted by Spartan1987
Just curious. You bought an M2B4 for your F22? or are you running an H?
Nice write up too, the pics really bring things into perspective.
h22 now, thanks for the comments everyone.
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Old 09-10-2006, 12:15 PM   #9
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nice writeup. i usually dip the tap in oil before using it, makes it cut much easier... and if you at least line it up somewhat straight, itll straighten itself as you start to twist it into place (as long as the hole was DRILLED straight), since its only cutting small threads into an existing hole, it cant make the hole go crooked. drill bit, tap, and tap wrench should total around $30 from sears...
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Old 09-10-2006, 01:13 PM   #10
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How deep R We supposed to drill?
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Old 09-10-2006, 01:49 PM   #11
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Quote:
Originally Posted by seigneur_rayden
How deep R We supposed to drill?
take one of the old studs out, and measure how long the bottom threaded section is. add a few millimeters since if you look at your tap, youll notice part of the tip isnt threaded. youll have to drill and tap a little deeper to make sure you have enough threads to accept the whole length of the stud.
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Old 09-10-2006, 11:52 PM   #12
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i personally wouldnt recommend using wd40 to tap with i would be more of a air tool oil or an actual tapping oil like tap magic or use maverl magic miracle oil but very nice write up
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Old 09-11-2006, 12:58 AM   #13
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dammit! i could have used my 5th gen tranny instead i sold it for 50 bucks
because i thought it didnt fit.
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Old 09-22-2006, 12:29 PM   #14
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Assuming you need to do this to get a h23 tranny on your f22 also? Nice write up
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Old 09-22-2006, 01:34 PM   #15
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this is just for H trannies.
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Old 09-22-2006, 03:32 PM   #16
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Quote:
Originally Posted by d112crzy
this is just for H trannies.
And i think someone mentioned at the top that its for 5th gen trannies also right?
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Old 09-22-2006, 06:42 PM   #17
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Nice DIY. You really simplified the process. I thought it was way more difficult than that.
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Old 09-28-2006, 09:41 PM   #18
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Quote:
Originally Posted by i97supratti
And i think someone mentioned at the top that its for 5th gen trannies also right?
yes...

im using a 5th gen exr coupe tranny (cad version)
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Old 10-09-2006, 12:33 PM   #19
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they dont fix man. i got the ex tranny and the 5th gen manual tranny mount dont fix.. maybe cuz i gotta loosen the other motor mount and push the engine forward just alittle bit to make it fix? the only mount loosen is the driver, front that's it.
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Old 10-12-2006, 12:24 AM   #20
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Im assuming this is only for 5spds? my H23 Auto tranny boltes right in.
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