I had planned on taller gearing with my 6.17 ratio tranny running an ej22 and even went the extra step and bought a 0.73 4th and 1.18 3rd gear sets. The best decision I made was to do the engine conversion first to see how it drives with stock gearing. I'm doing 3750rpm at 60mph in 4th and the power is just adequate! My gearing is the same as with the stock 2.1wbx (in australia stock syncros have a 5.43 ratio) Any taller and I'd struggle up hills and overtaking. Now I have some expensive gearsets sitting around for nothing. It's not too hard to drop out the engine and regear the trans if you're unhappy with your stock gearing but it's pretty expensive to build a gearbox upfront and find you're unhappy with it. Like others have mentioned good old rubber gears work at treat!> To: subaruvanagon@...
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From: glen_burnie@...
Date: Tue, 17 Apr 2012 20:42:12 -0300
Subject: RE: [subaruvanagon] Regearing 3rd & 4th gear after conversion
Thanks for your advice, it's much appreciated. There seems to be a mixed consensus on this issue.
Tom
To: subaruvanagon@...
From: eric_rowland1@...
Date: Tue, 17 Apr 2012 12:05:42 -0700
Subject: Re: [subaruvanagon] Regearing 3rd & 4th gear after conversion
My '91 Westy/Syncro is running a 3.0 conversion w/16" rims and a higher 3rd/4th gear courtesy of Lucas Hofgard in Boulder. The higher 3rd works as intended and the gear spacing between 2nd/3rd is not an issue when driving in town. Even here in the Southern Rockies at 7000 feet with the higher 4th gear I can climb almost any hill at highway speeds and maintain 60/65 in 3rd on those occasions where I need to downshift. From my experience, I'd recommend both changes with a 6 cylinder engine but your 2.5 may have different requirements and your location may present a different set of issues. If your trans is in good shape you can leave it intact and add 16" rims to see if that gives you the upper range you're looking for on the highway. Then tackle the gearing at another time if the rim/tire choice doesn't give you everything you're looking for.
--- On Tue, 4/17/12, surfervan91 <tomdueck@...> wrote:
From: surfervan91 <tomdueck@...>
Subject: [subaruvanagon] Regearing 3rd & 4th gear after conversion
To: subaruvanagon@...
Date: Tuesday, April 17, 2012, 10:00 AM
Hello everyone, I'm a newbie here with my first question. I'm about to sink a 2.5L SOHC Subaru into my '91 Westfalia. I've been reading about some people recommending that it's best to regear 3rd and 4th in my Westy tranny to accommodate the new engine. What are people's thoughts on the pros and cons or even the necessity of doing this?
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