We asked for input and got this......answer please reply to this ..persons comments
" Hemi-Jay on valiant50.co.za said
honesly, you will be straining the bejeebers out of the slanty whilst a low deck B will happily run to 1200hp. Also, adiabatic efficiency wont be that high, at high boost you wont make a lot of power but will only be heating the air up. The only way to curb this by burning methanol which burns cooler and since it needs a AFR of 5:1, will push more NOX out the exhaust side, making higher turbine pressure. Of course thats if you want a decent 9 second car. A mostly stock s6 should give no more than 11 second runs. Transmission is another problem here... Under square engine layouts dont like turbos that much, which is why you only ever see de-stroked small blocks running them. In a race engine a turbo specific cam is a must too, which could be very hard to find for a s6. Again, if you want a 9 second car. IMHO, a 383. lightened crank, I-beam rods, .990 floating pins, and forged flat top pistons with low skirts and flat rings, 302/324 degree roller cam and out of the box heads, will make 700hp+ at 7500rpm (happily, needs billet caps and 9/16'' studs though) with 600ft/lbs tq, for ever and ever. You can fog it up with 300hp worth of NOS and it will still live. Thats just what I would do. I just dont see an economy motor (not knocking it AT ALL) can be made better than something which is already superior. Weight is a consideration yes, but and ally headed, WP and intake equipped B, is LIGHTER than an s6, also, the iron head s6 will be a major hold back. (strenght, heat dissipation, fatigue, elasticity, thermal expansion etc etc.) Just my 2c, I think it is always wise to look at something from various viewpoints, makes making the right decision clearer. If you guys want to do it though, ill be behind you 100%, I would like to see a turbo s6, just dont expect THAT much from it."

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Regards,
Fanie Gerber
It's never junk, it's just a part you're not currently using

http://www.valiant50.co.za
Just say I own a few Mopars

Wow, he tried to sound unbiased toward the slant, but obviously doesn't think it's worth turbocharging one. Why does he think you want a 9 second car? Nice driving 14 second cars are lots of fun. A 12 second turbocharged slant six is not difficult and can be driven on the street easily. The Drake's Simca already runs high 9s in the 1/4, but it is a little car and does burn alcohol.

This guy spouts off adiabatic efficiency like it's some special problem with a slant. It's not. You can run high boost with an efficient turbocharger and efficient intercooler and make lots of power just like with any other engine. He brings up tranny problems, but doesn't say what the problems would be. An A904 built up very modestly is all you'll need. The custom turbo cam is a cake walk for a cam grinder. Several folks here can point you toward reasonable duration and lobe separation angles for the cam. Long stroke engines are harder to spin to high RPM, but that doesn't mean you can't turbocharge one. Has this guy never seen one of the millions of long stroke turbo diesels in existence? Only destroked/short stroke small blocks run turbos? The slant having an iron head is a problem? This guy's world is very much smaller than mine.

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Joshua

I agree with everything you say Josh - Him and his buddy decided to throw the slant and do the stroked 383 thing and are preaching this as the only way to go...I am open to suggestions.... for the price of his intake and ally heads and roller rockers you have a very good slant so dunno what he is on about...

and weight wise ...and big block a-body does not handle well - PLUS I agree about the the long stroke turbo diesels

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Regards,
Fanie Gerber
It's never junk, it's just a part you're not currently using

http://www.valiant50.co.za
Just say I own a few Mopars

Ah, now I see where he's coming from. This guy wants to build a 9 second car and already has his plans. That's fine. With that ET goal and a regular sized steel car it's easier and more reliable to go with more cubic inches. If I had the money I'd rather do a race-block small block with the extra head bolts, W9 or Indy heads, 3.79" stroke crank, turbo it and run 8s.

For the price of his heads we're about 1/2 way to a good turbo system maybe more depending on which heads he buys. It's already been demonstrated that a stock short block slant will go 12s. With decent head work, the proper cam, good pistons and the right turbo system 11s aren't too difficult.

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Joshua

It doesn't really matter what he's on about... except that you did ask for comments and he's given his. It's your car and your money so do what YOU want.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

[quote/] The custom turbo cam is a cake walk for a cam grinder. Several folks here can point you toward reasonable duration and lobe separation angles for the cam. [/quote]

Is anyone here running a turbo cam profile? What are the specs?