RE: Anyone have a 2117cc 16V

["Fry, Larry" <LEF@chem-tronics.com>]

piston speed, per se, does not affect power output.
piston speed, per se, does not affect the amount, or the speed, of intake
charge.
rod angle does not affect compression.
revability is not (at least outside the world of 10K+rpm engines) determined
by intake charge   (port) velocity.

Longer rods are benefitial because they put lower side-loads on pistons,
decreasing friction and wear.  Their added benefit of a decrease in piston
speed is a moot point in our engines, since our engines are nowhere near
critical piston speed.  They also provide for reduced inertial loads (apart
from loads as a function of pure piston speed) on pistons/pins/rods, but,
again, outside of a pure racing engine, this means nothing to us street
people.

Larry  sandiego16V


-----Original Message-----
From: Randy B [mailto:sirocco@telocity.com]
Sent: Wednesday, October 31, 2001 5:37 PM
To: chris jevens
Cc: scirocco-l@scirocco.org
Subject: Re: Anyone have a 2117cc 16V


Chris,
Thanks for the info :)

Hmmm.....
But wouldn't the taller block create slower piston speed and therfore less
power?
My basic understanding is that with a smaller angle (piston further from the
centerline of crank) the speed of the piston in it's down stroke, at 90*,
and it's upstroke, at 270* would be slower, pulling in less air (or pulling
it in at a slower velocity). There would also be less compression because
less air is being compressed.
Am I even remotely correct in these assumptions???????

The taller block would be smoother (probably why VW went to the taller
setup) because of less side-load on the pistons and smaller angles for the
movement of the 'system' to overcome. Again does this make sense?????

Also, isn't rev-ability mainly a function of airflow and/or port velocity?

Thanks
Randy (wishing he had paid attention in physics class)



> Randy I have been curious about the same type motor. I have been talking
to
> a couple people from Velocity sport tuning... they have been a lot of help
> to me in the past, and I have found them to have a lot of truth to what
they
> say. The BS is at a minimum. They recommend the use of a tall block from
the
> later 2.0 8v crossflow motors that seemed to have taken place of the 16v
> 2.0.
> This would be:
>
> -95.5 crank (lightening of course, possible knife edging)
> -160mm connecting rods (check the EIP website they have chromoly,
>                         forged, and titanium)
> -pistons? I havn't gone that far, but for this application I guess they
>                         would custom... again Velocity has them.
> As far as the ratio of bore to stroke... I was told by Velocity that using
> the other older block(9A) from the later 2.0 16v motors of the early 90's
> you wouldn't be able to spool all the way up to red line... how true? I
> havn't had a chance to go any further with it... though they said they
have
> done the combination 95.5/160mm rods/Bore?(didn't ask)/tall block from a
2.0
> 8v, and had great success with it working ridiculously well through the
> whole power band... sounds good to me... $$$ value?? maybe it would be
> cheaper to go to a turbo?
>
> well I hope that helps you in your quest for power/speed...
> chris jevens
>
> >From: "Randy B" <sirocco@telocity.com>
> >To: <scirocco-l@scirocco.org>
> >Subject: Anyone have a 2117cc 16V
> >Date: Wed, 31 Oct 2001 16:45:09 -0800
> >
> >Has anyone built, or know someone who has, a 2117cc 16V (or 8V for that
> >matter).
> >I would like to find someone who has tried this succesfully or
unsucesfully
> >and why.
> >
> >JE (other?) 84mm forged pistons, Carillo (other?) forged rods, and 95.5mm
> >TDI forged crank (knife-edged to lighten) in a 9A block (16V)
> >
> >I am considering finding a 90-92 GTI and doing a complete
> >motor/fuel/motronic swap.
> >It seems if I can:
> >A. B. Have the head flowed and ported as needed for the proper port
> >velocity.
> >C. Match th correct cams
> >D. Run ~11.2:1 compression
> >
> >I could have a monster of a motor with good streetability.
> >
> >What do you all think, need some advice here :)
> >
> >Thanks,
> >Randy
> >81 Scirocco S "Mars" - needs a bigger motor
> >81 Scirocco S "Cosmos" - will get the TT 1847cc 8V for daily duties
> >
> >
> >--
> >Email LIST problems to: scirocco-l-probs@scirocco.org.
> >To unsubscibe send "unsubscribe scirocco-l" in the message to
> >majordomo@scirocco.org
> >
>
>
> _________________________________________________________________
> Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
>
>
> --
> Email LIST problems to: scirocco-l-probs@scirocco.org.
> To unsubscibe send "unsubscribe scirocco-l" in the message to
majordomo@scirocco.org
>
>


--
Email LIST problems to: scirocco-l-probs@scirocco.org.
To unsubscibe send "unsubscribe scirocco-l" in the message to
majordomo@scirocco.org


[Disclaimer]This e-mail is strictly confidential and intended solely for the
addressee. It may contain information which is covered by legal,
professional, or other privilege. If you are not the intended addressee you
must not use, disclose, or copy this transmission. This E-mail is not
intended to impose nor shall it be construed as imposing any legally binding
obligation upon GKN Aerospace Chem-tronics Inc. and/or any of its
subsidiaries or associated companies. Neither GKN Aerospace Chem-tronics
Inc. nor any of its subsidiaries or associated companies gives any
representation or warranty as to the accuracy or completeness of the
contents of this E-mail. GKN Aerospace Chem-tronics Inc. shall not be held
liable to any person resulting from the use of any information contained in
this E-mail and shall not be liable to any person who acts or omits to do
anything in reliance upon it.


--
Email LIST problems to: scirocco-l-probs@scirocco.org.
To unsubscibe send "unsubscribe scirocco-l" in the message to majordomo@scirocco.org