Search found 260 matches

by Stefan
Mon Apr 28, 2008 5:13 pm
Forum: Aftermarket and High Performance
Topic: Primary length/dia on tubular Honda D16 turbo manifold?
Replies: 19
Views: 1683

Stef, are you looking to have something to resale and make mutiples of or is this a one of thing? I'm working with another shop to make a header for the 1.6 Chevy Aveo perhaps it's something you can use. take a look at this link and let me know if your 1.6 flange looks like this CLICK HERE . if it'...
by Stefan
Fri Apr 25, 2008 12:03 pm
Forum: Aftermarket and High Performance
Topic: Primary length/dia on tubular Honda D16 turbo manifold?
Replies: 19
Views: 1683

about the best header I've found (and intend to use on mine) is from the Hyundia Tiburon, it uses 1.625"/41.25mm primaries and i wouldn't go any smaller than that. Thanks Garrett. Just to clarify, are you saying it's a better fit for the 2L engine? It looks like the choices are to perhaps import a ...
by Stefan
Thu Apr 24, 2008 12:35 pm
Forum: Aftermarket and High Performance
Topic: Primary length/dia on tubular Honda D16 turbo manifold?
Replies: 19
Views: 1683

Primary length/dia on tubular Honda D16 turbo manifold?

I wondered if anyone in the US has had or got access to one of these? I would like to know what the primary length and diameter is on the typical tubular manifolds found on ebay. It's just to check it's suitablity for X16XE and X14XE engines.

Thank you for your response.
by Stefan
Thu Apr 10, 2008 8:41 pm
Forum: Aftermarket and High Performance
Topic: Technical discussion -- Intake runner
Replies: 13
Views: 1643

There is some hp lost to accessories but there's is still a decent amount of hp consumed by friction etc. These losses go up by a power law with rpm so simply taking a torque reading at practically zero rpm won't work. The losses can be roughly broken down, 1.Valvetrain friction 2.Cranktrain frictio...
by Stefan
Tue Apr 08, 2008 12:33 pm
Forum: Aftermarket and High Performance
Topic: Technical discussion -- Intake runner
Replies: 13
Views: 1643

Thanks for the other links..... what I meant about the turbocharger adding difficulty is more or less that it's not a static pressure.... that is to say that the boost will be rising during the mid band.... and I really don't know how to calculate that pressure without taking physical measurements ...
by Stefan
Mon Apr 07, 2008 12:30 pm
Forum: Aftermarket and High Performance
Topic: Technical discussion -- Intake runner
Replies: 13
Views: 1643

Question for you.... the wave speed going towards the valve is a function of mass air flow versus cross sectional area of the tube right? So why does the return reflected wave wave move faster than the speed of sound? I would have thought the pressure wave would move at similar velocity to that of ...
by Stefan
Fri Apr 04, 2008 8:35 pm
Forum: Aftermarket and High Performance
Topic: Technical discussion -- Intake runner
Replies: 13
Views: 1643

Well, you have picked one of my favourite subjects. :) First off, if you want an in depth view of the intake process I'd recommend you look at the four stroke book by Prof G. P. Blair. In a nutshell - A negative wave is generated during the intake stroke at peak piston speed (~ 75-80 deg ATDC) and t...
by Stefan
Sun Feb 11, 2007 12:07 pm
Forum: Aftermarket and High Performance
Topic: c20get
Replies: 47
Views: 17106

If you set up the electric throttle plate such that 20lb/hr goes into the engine and 5lb/hr goes throught the dump valve and back into the intake path.... you end up in a more efficent area of the compressor map. This is already done on large turbochargers... It's called a ported shroud housing! Si...
by Stefan
Thu Feb 08, 2007 1:13 pm
Forum: Member's Cars and specs
Topic: 2.0L 8V turbo C20GET Lemans
Replies: 112
Views: 38535

Chris, Nice to see the car coming along. You and Tom will have two of the best Lemans across the "pond". With the big turbo your fitting what are you doing intake wise? I couldn't carry on with the stock TB location on mine - I junked the stock GEt fuel rail too. Now using the 2L 16v TB (off a UK Ec...
by Stefan
Thu Feb 08, 2007 1:02 pm
Forum: Member's Cars and specs
Topic: GsiTurbo 2.0L 16V Turbo buildup ***DYNORUN 236WHP 255WTQ***
Replies: 155
Views: 47161

Looking really good Tom! Can't wait to see the finished result - it'll be a very unique car!

Stef
by Stefan
Thu Jan 11, 2007 12:32 am
Forum: Aftermarket and High Performance
Topic: c20get
Replies: 47
Views: 17106

There has been some very interesting posts put up on here :) C20GET, are you Slowej from jbody.org? Sorry if your not, I know there are a few people on there that are good with the stock ECU. The stock springs seem fine with the boost turned up. I know Tony has run past 25psi with new stockers. It's...
by Stefan
Thu Dec 21, 2006 6:36 pm
Forum: Aftermarket and High Performance
Topic: c20get
Replies: 47
Views: 17106

i was wondering how can boost break followers... now it makes more since that the downshift caused that. MMamdouh Boost pressure has a similar effect to increasing valvetrain weight - if you imagine the boost pressure on the back of the valve face trying to keep the valve open. If the valve has mor...
by Stefan
Tue Oct 31, 2006 10:48 pm
Forum: Member's Cars and specs
Topic: GsiTurbo 2.0L 16V Turbo buildup ***DYNORUN 236WHP 255WTQ***
Replies: 155
Views: 47161

Looking good Tom!
Is the manifold going to be a proper pulse one to go with the twin scroll turbine housing?
Why did you need spacers on the main cap studs?

Can't wait to see it fully built :)


Stef
by Stefan
Sat Sep 23, 2006 10:30 am
Forum: Aftermarket and High Performance
Topic: 8v Turbo Head Modifications.
Replies: 12
Views: 2759

Thanks for the comments guys.

The head won't be back from having the exhaust ports welded until next week. So I won't be grinding again until then.

Stef
by Stefan
Sat Sep 23, 2006 9:51 am
Forum: General Off-Topic
Topic: chevrolettech.com
Replies: 23
Views: 2605

Re: chevrolettech.com

Hi, i've been toying with the idea of registering this domain. we will keep the daewootech.com too, but this will make us more avaliable for europe Chevrolet users. also Chevtech.com sounds ace What do you guys think? http://www.daewootech.com/forum/chevtech.jpg I'm glad you did not register Chevte...