RE: [alfa] Zat Tensioner Vs Hydraulic in non-hydraulic mode Vs...

[gwynnes1@xxxxxxxxxxx]

When BMW updated their 4.0 liter V8 in 1996 to 4.4 liters, they went from a double roller chain to a single. They also retuned the engine for the same HP but a bigger and broader torque curve.
Gwynne Spencer

-------------- Original message -------------- 

> > Okay, I might have misspoken when I told Orville and Wilbur it would 
> > never fly, but when that German car came out in the 60's with a 
> > reinforced rubber belt rather than a good old timing chain, said, 
> > "There's gonna be nothing but trouble with that set-up." 
> 
> The Goggomobile was intruduced in the 50's, not the 60's, right? 
> 
> 
> > Even though I do have a shop manual for the GTV6 / Milano I'm not going 
> > to bother looking at the engine stuff - but if someone could come up 
> > with a case completely enclosing the timing "area" (carbon fiber?), 
> > change sprockets, install a simple chain tensioner as found on the 
> > 4-cylinder's, and figure out how to get oil to it all - wouldn't life be 
> > so much simpler? 
> > 
> > Sure, you'd have a little bit more noise going on under the hood, but 
> > how many of you V-sixers wouldn't exchange a little metallic racket for 
> > the piece of mind knowing the "belt" should now last almost until 
> eternity? 
> 
> I hate timing belts, much prefer chains. I think the above is not quite so 
> simple a mod. 
> 
> At any rate, belts do have an advantage, chains rob some horsepower, belts 
> rob less. I was reading a section from Bradens last book, Dr Tenney (our 
> very own Grinch) had written a few pages to Pat concerning Alfas, 
> modifications, tuning, etc. One of the things he pointed out was that in 
> tuning he had spent a lot of time removing areas where HP was robbed, rather 
> than looking for ways to increase HP. One thing he did in an old chain 
> driven twin cam Alfa was replace the double width timing chain with a single 
> width one, and watched the HP go up. 
> 
> An interesting way of looking at things.. 
> 
> bs 
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