[DeTomaso] Dry Sump

Corey Price coreyjprice at gmail.com
Sat Jan 18 20:06:08 EST 2014


Julian,

That's what I thought too- the bellhousing might start to get in the way.  The engine stuff could be moved but you'd also need to deal with the accessory belt routing.    Also, the half-shaft position thru the wheelhouse will change, and you'd have to lower the engine and tranny by 6" to get the half-shafts in the stock position since the distance from the input shaft to the output flange centerline is about 3".    Then there's the ZF shifter shaft relocation to the opposite side which may interfere with the frame rail there, too.

So, the frame rails do kinda get in the way as I see it.

Corey


On Jan 18, 2014, at 5:07 PM, Julian Kift wrote:

> Perhaps the analogy to a GT40 is a little mute as they were all wet sump, albeit quite a shallow oil pan. In a Pantera it likely depends on what you want to achieve and how much work you want to take on. I don't have a Pantera here to measure, but if I recall the wet sump oil pan is the lowest point, therefore replacing it with something shallower (e.g. dry sump) provides some degree of freedom to lower the engine. However IIRC the rear of the ZF is also quite close to the rear cross member so assuming you don't want to start cutting up you Pantera the ZF inversion might help. The inverted bellhousing usually has a cut out exposing the flywheel (as you allude to the SPF owner finding out), which provides a little more clearance, however in the Pantera I have a feeling the constraining factor might very well be the largest diameter of the bellhousing against the chassis frame rails. Then there's the possibility your headers will interfere, so more $$ and teh dry sump scavenge lines need to route out the side of the pan, so maybe interference there.
> 
> FWIW ERA recommend a 157 tooth flywheel and 10" clutch, but that's probably for a 289/302. I'm not sure what I have without digging out paperwork s it's a 351W based 408 stroker.
> 
> Julian
> 
> From: MikeLDrew at aol.com
> Date: Sat, 18 Jan 2014 17:44:10 -0500
> Subject: Re: [DeTomaso] Dry Sump
> To: julian_kift at hotmail.com; guson at home.se; michael at michaelshortt.com
> CC: detomaso at poca.com
> 
> 
> In a message dated 1/18/14 14 28 19, julian_kift at hotmail.com writes:
> 
> 
> That's probably the dogs bollocks of setups for the man who when he drinks beer only drinks Dos XX. I'm sure cheaper variants would be available from the GT40 replica vendors like RCR, ERA, Superformance etc.
> 
> >>>Sorry, but no.  All the GT40 replicas normally use a full-size clutch, which creates horrific ground clearance problems.  Look underneath a Superformance car, for instance, and you'll see the flywheel/bellhousing only inches from the ground, just like a Mangusta.
> 
> >The inverted bellhousing's I see occasionally for around $350, in fact I have a surplus one for sale on GT40's.com for that exact amount. Kennedy Engineering is big into specialist clutch & flywheel kits for kit cars as well as bell housings.
> 
> >>>All use full-size clutches.  The whole point of the discussion is to maximize the benefit of a dry-sump conversion.  There is no benefit to JUST inverting the ZF, if the flywheel is the same diameter as before.  The benefit is only realized when the gearbox is inverted AND the flywheel shrinks, which then lets you lower the engine that much closer to the ground.
> 
> >I don't have good photos for bell housing ground clearance of my GT40, but how low do you want to go?
> 
> >>>Do you know what kind of flywheel setup you have?  It's likely that ERA mounts the engine higher than an original GT40 to provide for better clearance, while SPF mounts it in the stock (or close to stock) location and people beat the hell out of their bellhousings and flywheels.  I recall reading of at least one guy whose engine blew up because he ground it out often enough that he ground the bellhousing away, and the next time he hit the ground, the flywheel dug into the pavement and the engine went from 5000 rpm to STOPPED instantly.
> 
> Mike
> 
> _______________________________________________
> 
> Detomaso Forum Managed by POCA
> 
> DeTomaso mailing list
> DeTomaso at poca.com
> http://poca.com/mailman/listinfo/detomaso_poca.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://server.detomasolist.com/pipermail/detomaso/attachments/20140118/a0bc5292/attachment.html>


More information about the DeTomaso mailing list