I only mentioned the idea of running a butchered dowhouse shroud and external cooler as an option for Asad if he couldn't locate all of the bits necessary to convert to a 100%-stock doghouse setup yet wanted to do SOMETHING to improve the cooling-air distribution on his singleport.
With the doghouse fan shroud you can run any fan. After plugging off the air passage to the oil cooler, a singleport fan is adequate. If you wished to go for "overkill" and use the wider DP fan you'd also be wise to use a louvered engine lid. Regardless of fan/shroud setup used, always use the wider (11.3x912La) belt with an alternator. The "generator" 9.5x905La belt will fit, but it will slip at high RPM and cause engine overheating. --- [EMAIL PROTECTED] wrote: > Marc, > > I also appreciate you sharing your VW knowledge. > Writing a book is a huge undertaking and I certainly > understand not wanting to do that. I do, however, > keep many of your emails in a folder for future > reference. > I plan on compiling some emails into a binder for > reference in my garage. If my computer dies, I'd > like > to have access to the VW knowledge being passed > along. > > You mention force-feeding VW trivia to your son. > Does > he enjoy the air-cooled VW hobby? > > One thought on converting a single-port engine to an > external oil cooler with a modified dog-house fan > housng. > Wouldn't you still want to use the wider dog-house > fan > instead of the SP fan? It seems that if you modify > the > dog-house fan housing as you suggest to correct the > air-flow direction; more air-flow would be better. > > Brian > '65 Convertible > '67 Ghia > '73 Super > > ----- Original Message ----- > From: "marc vellat" <[EMAIL PROTECTED]> > To: "Air-Cooled Volkswagen Discussion List" > <[email protected]> > Sent: Friday, January 18, 2008 3:08 AM > Subject: Re: [vintagvw] Non dog to doghouse cooler > conversion. > > > Thanks for the kudos, good to know I'm helping. > I'll never get around to writing a book, but I > figure > that thanks to the Internet I'll be able to share a > lot of what I've learned over the years with future > VW > fanatics even when I'm dead & buried. I've force-fed > my son VW trivia since he was 5 (he's 23 now) and > he's > retained a respectable amount, hopefully he'll be > able > to take on the responsibility of filling in the gaps > when I finally succumb to Alzheimer's ;) > > I had an afterthought about your cooling-system > question...long ago it was thought by most (myself > included) that removing the stock cooler from a SP > and > replacing it with an externally-mounted tube & fin > unit would be an upgrade - turns out that when you > do > that you end up with wasted air flow to the base of > the LH cylinders and an overall INCREASE in engine > operating temperature. The doghouse fan housing has > internal vanes which even out the distribution of > cooling air...if you were to take one of those and > skin off the doghouse, and patch over the slot that > feeds air to it, an external cooler could be used to > advantage. You could still use the narrow SP fan > with > this setup, too, so the doghouse shroud would be the > only stock part you'd need to hunt down. > > --- asad ishaque <[EMAIL PROTECTED]> wrote: > > > > > Marc! > > > > Im convinced not to go ahead or plan such a > > conversion. I will save this post for reference > > along with all your (and quite a few others') > > earlier posts. > > > > I really admire your knowledge when it comes > to > > explaining things. I am just wondering, have you > > ever thought of writting a book??? Or maybe a > > detailed website on VW tech??? > > > > Not a joke but a very serious idea which must > be > > considered. Or if you dont have time on hands > maybe > > your posts can be compiled as a Q&A collection? > > > > On a local wheels related website I am regarded > > as the VW master despite my rants I know nothing. > I > > always tell them, wait till you see Marc Vellat's > > posts!!! > > Best wishes, > > > > Asad > > Karachi, Pakistan. > > > > > Date: Tue, 15 Jan 2008 00:19:39 -0800> From: > > [EMAIL PROTECTED]> To: [email protected]> > > Subject: Re: [vintagvw] Non dog to doghouse cooler > > conversion.> > If your case is small-passage (all > > pre-B6 singleport> cases were) it'll also be > > single-relief - not the best> for a doghouse > cooler > > since it lacks the better cooler> > overpressurization > > feature of the dual-relief case,> but you can > still > > convert to doghouse if you want -> just don't rap > > the engine out when it's cold,> especially if > you're > > running high-viscosity oil.> Singleport cases have > > 6mm holes in the cooler mounting> "ears", those'll > > have to be drilled out to 8mm to fit> the doghouse > > adapter. The short singleport 6mm cooler> stud > will > > need to be replaced with a longer one -> better to > > drill & tap the case for a proper 8mm stud.> Most > > importantly, to put a doghouse cooler adapter (or> > > even a 111 117 021E large-passage SP cooler) on a> > > small-passage case you'll need a pair of > conversion> > > seals - the only way I know to get them is in a > 111> > > 198 029 kit...it'll contain two seals and three> > > washers - you won't need the washers for this> > > application, they're for putting a small-passage > > 111> 117 021 cooler on a large-passage case.> > > Besides the doghouse fan shroud, you'll need the > > two> pieces of exhaust ductwork and the front tin > > with a> window in it (or you can cut one in your > > existing> tin), the "Hoover bit" which seals off > the > > bottom of> the cooler AND the wider cooling fan > for > > full effect.> > My personal opinion is that for a > > stock/near-stock> 1300, 1500 or 1600 SP there's > not > > enough benefit to> warrant the conversion > (assuming > > all of the engine> compartment seals are intact, > of > > course)...but the> climate's pretty mild where I > > live, it'd probably be> worthwhile in the > hotlands.> ____________________________________________________________________________________ Never miss a thing. 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