|
I hesitate to put this in the performance section because IDK if you can call the OBX performance , but here goes.
Had a urgent need for a better than stock intake. Thought I would try the OBX for a band aid. Got a deal from one of our members (thanks again Nightfall) and I impatiently waited for it to arrive.
When the box came in, I anxiously opened it up and it was like the light of God himself came out of that box;
Look at how shiney she is! Damn, if it's that pretty how could it be bad?
So I carefully lifted her out of the cushion of bubble wrap to look her over. Hmm, welds are big but not too sloppy, It has 1/4 and 1/8 npt holes to work with. The throttle body holes line up with a stock throttle body. The intake flange lines up precisely with an extra head that I had laying around. Damn, maybe this isn't as bad as others say it will be. Let's take a closer look.
Upon closer inspection, that plenum looks kinda like a Mr Potato head doll.
All head and no body.
Well, OK, so the plenum's a little big. I can live with that. The throttle body hole looks like it's stock size, so I will have to port it out for my MP 60mm. Cool, I anticipated that. I don't have to worry about the map sensor because I run MSnS. But I could see drilling it out on the end of that big-headed plenum, no problem. OK, let's look inside the plenum.
WTF? Lol, they put the runners through the plenum. One by more than 1/4 inch! What were they expecting some kind of water level in there? Well, at least they got number one runner correct Gonna have to grind that down somehow.
Ok, let's look at the flange side of this bobble headed thing.
Again, WTF? Those runners are not even close to aligned with the flange. In some spots, there is like 3/8 of an inch step into the runner area. Imagine the turbulence when the air comes down the runner all happy-like from being in that big ole plenum and then SLAM! It goes face first into that step. That'll cause some disturbed air. Crap gotta do some grinding there.
OK, let's check fuel rail then get down to busi........and, of course, fuel rail doesn't quite line up. But I can simply step up the holes on the old rail like this;
That's an easy one to solve.
Now I'll start by match porting the TB; no problem (sorry no pics).
Next, I gotta try to grind/port/massage the flange side of the runners so there is at least a smooth transition;
Well that cleaned them up a bit, I'll polish them out later.
Now to get to the plenum. How to get in there ? Well, I'll take out my 18" top plate to bottom plate, wood bit extension and attached my carbide bit to it.
(I use this to drill from one floor to another - in a house - to run wires or pipes from one floor to another. The acorns were of no help)
That allowed me to do this;
Yeah, I got back and gave it a polish.
Now she's ready to install. First, take off the old;
(Hmm, I got some junk laying around) Switch parts;
and bolt on the new. But wait, what's this? It doesn't fit in there? OK, gotta remove the cruise control throttle cable;
OK, but now I need a throttle cable. OH! That's what the side of the house is for;
My daily driver/emergency parts car (incidentally, does anyone have a non cruise control cable kickin' around )
Now she'll pop right in th.....nope. Gotta relocate my 4g63 ignitor for the MSnS. OK, now if I can....just...get it in there the right Rubic's cube way. Um.....up from the bottom.......twisted 36.5 degrees and angled 14.8 degrees.....slip over one stud......then spin.....Viola'. She's on! Nothing to it. Bolt her up, hook her up and she's ready to go;
Looks pretty, but I haven't hit the dyno to tune her yet. Don't think at this time she hurts or helps, but I did get the 13.863 @ 98.84 run with her on.
Heh, heh, just a little "for fun" write up.
Captain Caveman
96 RS Turbo 11.414 @ 119.62 MSNS, Crower 2 NA cams, BW366, 10.5 comp, UDP, 60mm TB, W/A intercooler, 3.55 tranny 567.9whp 430tq 97 RS NA 13.188 @ 103.87 MSnS powered 12.5 comp, Crower 3's and 219.4whp with 175tq 98 RS DD 12.5 comp on stock ECU, LTH, Crower 2's, Koni, GC, Hypercoil, DG hats 99 OZ 5sp Stocker 15.856 @ 85.97 99 GS stocker auto 17.7@77mph!
wiki home page:http://www.2gnt.com/index.php?d=bullettdsm
|