Date:         Sat, 22 May 2010 16:47:23 -0700
Reply-To:     Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject:      Re: Optimum WBX rpms; was RE: 4 speed/5 speed shifter
Comments: To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
              reply-type=original

hi...
I like that.................. 3.800 rpm equals 68 mph.
'livable' for what it is.

as for the oil temps.
I'll have to start watching that.
I run a 2.1 with 2.1 full exhaust system and the whole 2.1 intake system,
but 1.9 EFI and cooling system, which does not use an oil cooler usually.
But I have one fitted and plumbed in .....just need to connect some coolant
hoses.
So when it warms up some, I'll check oil temps on hot days and at speed,
and do that several times, then connect the coolant hoses.
and see if there is a measurable difference with my 2.1 style oil cooler
connected into the cooling system.

I do not see any reason why 4,200 rpm would produce particularly  higher oil
temps than 3,800 rpm would.
other than slightly increased load due to speed and aero drag ...
I see no reason especially why oil temps would be higher with a bit more
rpm.
Scott


----- Original Message -----
From: "Dennis Haynes" <d23haynes57@HOTMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, May 22, 2010 3:59 PM
Subject: Re: Optimum WBX rpms; was RE: 4 speed/5 speed shifter


> 205/65-15 tires match the stock size. With stock gearing 3,800 rpm puts
> you
> close to 68 mph. Much above 4,100 to 4,200 rpm oil temps can start to
> climb.
>
> Dennis
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Scott Daniel - Turbovans
> Sent: Friday, May 21, 2010 4:16 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Optimum WBX rpms; was RE: 4 speed/5 speed shifter
>
> that's normal cruising rpm with a manual 4 speed in a wbxr vanagon.
> I'm right at 3,800 rpm for normal 'about 64 mph' cruise.
> when I'm going more like what is probably almost 75 mph ...I'm at 4,000 to
> 4,100 rpm.
>
> my tires are only slightly larger diameter than stock. I run 205-65 R 15 C
> Michelin Agilles ..
> and 4K rpm ..
> given the flat and weak torque curve of a wbxr engine ...
> that's what they need at that speed, 4K rpm.
>
> it's a short stroke, naturally balanced opposed four  engine ...not that
> bad
> for it at all.
> Scott
> www.turbovans.com
>
>
> ----- Original Message -----
> From: "Robert Fisher" <garciasghostvw@GMAIL.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Thursday, May 20, 2010 5:50 PM
> Subject: Optimum WBX rpms; was RE: 4 speed/5 speed shifter
>
>
>> --snip--
>> perhaps that rpm would be a bit wound-out for a WBX boxer motor
>> --snip--
>>
>> Mine seems happiest at ~3800-4200 rpms.
>>
>> Cya,
>> Robert