Pelican Parts Forums - Show us your "old school go faster" trick for your engine!

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- - Show us your "old school go faster" trick for your engine! (http://forums.pelicanparts.com/porsche-911-technical-forum/1064827-show-us-your-old-school-go-faster-trick-your-engine.html)

Porsche really didn't leave too much on the table for these motors. They are well designed high performance machines which is what you were paying for. This is why its fairly costly to extract hp from them. Old school tricks are for small block Chevy's. :D

Quote:

Originally Posted by Rodsrsr (Post 10923258)

They were, however, increasingly constrained by emissions requirements. Those requirements effected everything from the induction to the cam profile to piston dome shape to compression to exhaust... and more. We have the luxury of being able to ignore those constraints and build the motors that Porsche engineers would have loved to build.

A great example is my 3.0 liter. In stock configuration, 3.0's make 180-190 hp. Mine makes about 250. Different induction, cams, pistons, exhaust, and other detail bits all added up to a substantial increase in power.

Quote:

Originally Posted by Jeff Higgins (Post 10923302)

You are completely right!
I would argue that my SC 3l engine with 180 horses is proof that Porsche has had engineers to come up with as little performance as possible ..... :D
180hp on 3L ??? .... 30hp per cylinder (of 500cc) ??? how did they do it?
To call a 3 L. 6 cyl. engine efficient, (ie an old one from 78!) it must have a minimum of 40hp per cyl. and- or 80hp per liter! Otherwise it should not sit in a "sports car"

Quote:

Originally Posted by jpnovak (Post 10923248)

I think this thread needs to discuss modern adaptations to old school tricks. There are so many ways to improve upon what the factory did 40+ years ago - and that should be the discussion.

Where is the discussion about engine coatings to reduce friction and control heat, modern engine management for ignition and fuel control, flow dynamics for our 2 valve heads, (as Fred mentioned) modern headers for resonance, (as Jeff mentioned) modern cam profiles, etc?

Making more engine power is just part of the equation. What about matching gear ratios and tire sizes to torque curves to optimize acceleration. BTW look up Bill Verburg's thrust curves if you want to know more.

Consider that all of the good car builders will maximize the entire drivetrain package.

1st.
Cool suggestion! Let's just get some more of that stuff.
For the most part, I "hit the wall" somewhere in my pursuit of entertainment on those dark winter nights ... I LOVE fiddling with things, and making old engines and cars better than originally intended from the factory. but I always end up with more power than I like to drive with (on the street that is). :)
2nd
You can rest assured!... When my engine is built the way I want it, and it has been on the dyno for accurate mapping, and on the road for the last shake down. Then my gearbox will be disassembled, and all gear ratios will be calculated according to engine characteristics and my driving style! ;)

Quote:

Originally Posted by Rawknees'Turbo (Post 10920475)

All of youse guys(?) hem-hawing about boat-tailing this, compression and displacement bumping that, polishing your cranks (:eek:), shaving a gram off here and there, and optimizing cam lift and duration are just pissing in the wind! All of that mumbojumbo, and then some, will still leave you crying for your mamas and suckling hind teat compared to the mighty turbo pooowwwwaaahhhhhh (about as old school, go really fast as it gets)!!!

For the visual learners, I present ----->

https://i2.wp.com/www.speedhounds.co...orking-gif.gif

Yer all welcome for the tip (just the :eek:)!

Hmmm ... Yeah yeah :rolleyes::D
We can in no way beat the game, against a turbo engine when it comes to hp!
But there ARE other things that make an engine- and car, exciting! :D
If you just want to be the fastest, buy an F-16. :cool:
If you love a perfectly balanced engine, and the ability to use ALL of its potential without going into "Ridiculous speed", if you love to hear an engine breathe freely to 8000 rpm. then NA is for you! :D:D:D

Best bang for the buck: Confirm the throttle(s) open 100%, that is, as far as the system allows.

With a helper at the gas pedal, observe the throttle stop(s) when the the loud pedal is floored. If misadjusted, power isn’t realized. Affects many.

If okay, proceed with the above.

Sherwood