No razzle dazzle here... just a blog...
I've recently bought another A4 slowmatic (wreck) and got started recently on the build... Not much right now ... but I'll certainly add as I go...
The car, left one.... (yes I know the lights have gotta go.)
The start of the engine... bare for now.
A few specs!! and a list of items to look forward to on the car.
hp goal... unknown... but I'm looking for spool at 3k (laugh all you want)
Car specs:
Flocked dash
Gated shift console
034 mounts
Tein Drift Spec Sus... so long as I can get them to fit resonably after alterations
Bushings where-ever I can fit them
Stack if I can swing it.
Don,
The turbo system is going to incorporate many features found on your small displacement BMW turbo engines. This features a modified twin scroll housing, I'll post some pics soon, as I'm doing it in another customers car as we speak.
That is a nice mani in your sig. How much you let those things go for? Any complaints from customers about cracking issues or anything? Anyways, nice build, man . I will be watching this one.
That is a nice mani in your sig. How much you let those things go for? Any complaints from customers about cracking issues or anything? Anyways, nice build, man . I will be watching this one.
You obviously don't know who Jay is. The first a4 into the 10s was running one his manifolds.
P.S. I also run one of his manifolds on my car.
Jay,
So you say the turbo will use a "modified" twin scroll housing. I am assuming you are going to be building a twin scroll manifold to feed this turbo?
Last edited by Don Supreme; 10-08-2008 at 06:41 PM.
very nice, but what about the vw motor behind that motor?
That is another engine I'm reworking ... some of you may have seen the car at at WF... Last dyno was 420awhp.
Changing cams, compression, turbo and twin scroll housing also.
Originally Posted by Don Supreme
So you say the turbo will use a "modified" twin scroll housing. I am assuming you are going to be building a twin scroll manifold to feed this turbo?
Actually no... the manifold will still remain "open". Sit tight I'll show you what I'm brewing.
Originally Posted by Seerlah
That is a nice mani in your sig. How much you let those things go for? Any complaints from customers about cracking issues or anything?
We can continue cost questions in another method, ie PM or email. I've been making manifolds a long time...for every level of motorsport now. Very few of mine have cracked over the past years. If a few didn't crack I wouldn't learn.
looking forward to this one, out of curiosity, what cylinders do you combine on your twin scroll mani? this should be a new step for the B5 community. whats your timeline?
custom IM? why dual injectors instead of 1000cc?
...look out mike...
Last edited by Euro-Tuner; 10-09-2008 at 08:45 AM.
Usually I'll pair 1-4 and 2-3... but this one will not be divided...
lol- I'm not out for a hp war or what not... I doubt I'll drag this car. I made Mike's IM so I know what that design and his car are capable of. This IM will be quite different from that. I'll post the model in a few days.
The time line I'm hoping to work with is over the winter.
heres a peek of the housing mods on a t3 ..I'll post more of the t4 progress soon.
as you can see it will evolve into a internal flapper to shut off half of the housing.
heres a peek of the housing mods on a t3 ..I'll post more of the t4 progress soon.
as you can see it will evolve into a internal flapper to shut off half of the housing.
Holy fuck, an internal flapper? Who makes that, how much does it cost? Whats the largest A/r t3 you can get that hot side made in?
this is the first thread that i have actually subscribed to.
in for progress
i have a broken wrist and cannot even begin to move my pinky, let alone work the home keys. so if my posts lack grammer/punctuation and that iritates you, simply, fuck off
When your spirit is floating down that tunnel, towards the light, You know what's behind the light?
It's not God, it's me. And I'm gonna kick your poncey soul All the way back down the tunnel 'till you choke on your own fucked up ribs! Now, Wake the fuck up!
A lil side tracked here, but thought some of you might want to see.
I've never had this happen to a Tial unit, the TT I'm upgrading had some rattles coming from the mani as I was doing final assembly on the engine b4 install, just from moving it around in my arms. I took the Turbosmart wg apart (new style) to source the issue, rusted to hell and all three set screws had fallen out holding the valve. This is only after 4000kms and 80 pulls on the dyno.
The flapper sounds really cool. I've got it pictured in my head and could describe it but don't want to spill the beans. I want to see if yours looks like what I'm thinking. Equal flow when open and smoothly diverted when closed. Dead simple too. Great idea Jay!
Are you going to do the intake manifold on this car?
Jim - Moderator
We cannot achieve the future by being timid. It requires aggressive imagination.
Yes there will only be two copies of the IM until testing is over... one on my car and one with Bob Q... they will be totally machined until I can finish a die for stamping half the plennum. The TT owner above actually has a die stamp machining company, i lucked out on doing his while replicating a hypertune model and adapting to the stock base.
Yes the flapper is simple but the complicated part is the expansion of the metal under extreme load, accuracy in fittment, and keeping a nice seal during high boost. Compare it to a flapper on an internal wastegate and its a totally different environment... its never under pressure really. I'll be using 300M for most of it with a bit of machined cast block.
Last edited by California Jay; 10-10-2008 at 03:24 PM.
You aren't going to get a complete seal without tapering the edges so the flapper sits in a pocket like a stopper. That really only works well when round and that pocket is in the way of airflow. Given the rectangular smooth walled port and other limitations I still think you'll get a big benefit from this.
I'm going to sketch up my idea and see what you think.
Jim - Moderator
We cannot achieve the future by being timid. It requires aggressive imagination.
This turbo model has sloped walls in the turbine ports so my cut made some extra edges in there. I think it gets the point across though. My cut wasn't deep enough so my flapper isn't long enough to get the right angle when closed. Those sloped walls just made it look stupid when pocketed too deeply.
The green position is wide open and the pink position is closed. Since it is hinged at the bottom it would be angled when closed to help channel airflow and that tangential contact will allow it to seal consistently over a wide temperature range. The sides would be loose when cold and I can't think of anything to do about that.
Yes thats close to what I'm doing... I'll be continuing the flapper into the collector though... that will aid in the flow...I have to work with my documented runner cuts and flanges that I usually cut to get the outline of the flapper correct.
you are faster at the modeling of course... lol. I will still get my version up. I'm posting once in a while after lunch and a break here and there at work while putting other items together. Usually I'll program/model in the evening.
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. I will be watching this one.
Originally Posted by Seerlah
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