I'm busy swapping the P5M/P13 IM with something that says PDE on it, plus a Junk2 throttle body.

Pics of goods:


It's been prepped by Shawn (Rosko), and all his stuff pretty much reeks of quality, it's very impressive. I think it's silly that a manifold that has the same casting stamp as my head (PDE HF-1) requires so much hacking and slashing, but I will survive.


I was wondering what other people with aftermarket TBs do with the evap system? It's this line...



and it runs to the stock throttle body. I'm not sure what my best option for this would be - drill a hole in my HAI? The S2 TB definitely doesn't have provision for it, and this isn't a typical vac line to run to the IM. I've heard I'll be short of vac ports on the Euro-R anyway.

Thoughts?


Also, I f------ing loathe the stock IM gasket. I've chiseled for hours, put a nice gouge in the mating surface of the head (go go liquid gasket), and have at least another hour more tomorrow.

 

You need a vac source for the evap.

Next time get a chisel/screwdriver like this to remove the leftovers of that gasket.

 

Duh, yeah, that makes sense.

I guess I'll see what I could feed it into, it looks like a larger line than most ports. I think the Euro (stock) actually had a few pretty good things to hook up it to that Shawn shaved as part of the process of making it US H22 spec. Oh well, hard to know in advance


I have a couple chisels, plus a drill & wire wheel an a dremel with some attachments. It just won't come off easily.

 

I like using straight razors on the gaskets w/ alittle water. Oddly my im didn't have any gasket on it when I removed it to do the EGR bs.

 

there is also gasket remover spray, spray it on, let it soak, it will come off like butter.

 

dont you have a p28?

 

Yep.

Gasket remover spray seems nice in retrospect. We didn't have any on hand but didn't expect it to be this bad. I might get some anyway for the last 1/5th of the gasket.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote">You need a vac source for the evap.</TD></TR></TABLE>

Well, not really. If you hook that line straight to the manifold you'll basically end up with a vacuum leak. The throttle bodies that use this have a "partial" vacuum created by ports just in front of the throttle butterfly. I guess you could hook it to the manifold through some kind of restrictor, or if you have a spare port on the intake tube you can hook it there, or just don't worry about it. Plenty of people have just removed the evap crap entirely... just make sure you leave an opening somewhere for the fuel tank to vent.

 

p28 doesnt look for/use EVAP. Take that shiza out.

 

You're saying the 92-95 civic doesn't have an evap system? I could understand the p28 being not **** about it being removed, but I'm surprised to hear that it doesn't use it.

At any rate, I'd rather leave it setup as close to stock as possible. My engine still runs fine on the stock ECU, I still have e-tests to pass, etc. Plus having Neptune break on me made me appreciate having a backup plan while the board was being exchanged.
If I didn't care about that stuff I would have saved some money and probably got more power with the S2 IM.

 

Good info flyrod, as you posted that I saw a mental picture of those two little pinholes, you're right. They aren't vacuum sources at all, since they're before the butterfly. I suppose the air rushing by makes some sort of suction though.

If you use that chisel I pictured, mine is a snap-on, about an inch wide, you can just angle it about 30 degrees above horizontal, straight at the head or IM flange, and hit it with a hammer, it will move down, removing gasket.

 

kinda off topic...but I wanted to ask the OP how the fitment is on the skunk 2 throttle body to the manifold?

 

I believe that they design those two holes the way that they do is so that at partial throttle a slight vaccum is applied to the evap rather than full vacuum. one hole is very near to the blade, while the other is slightly further out. but at partial throttle where the blade is opened up a bit, the holes are positioned on each side of the blade causing a vaccum to be applied to the evap, but not so much that it would suck anything out of the canister or even gas tank itself. I dunno if it would damage anything or not just hooking it up to a straight vacuum source but I think they designed it that way for a reason. FWIW I know the s2000 tb can have that added to it (two little holes and nipple for evap hose) I've done it for another customer and it turned out great. Maybe the skunk throttle can be modified in a similiar manner?

just my two cents.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bigz187 &raquo;</TD></TR><TR><TD CLASS="quote">kinda off topic...but I wanted to ask the OP how the fitment is on the skunk 2 throttle body to the manifold?</TD></TR></TABLE>

I'll let the OP answer as well, but I know for a fact that the bolt pattern is slightly off. Not enough that it won't bolt up, but if when I was measuring other throttle bodies I built a fixture with 4 pins to check bolt patterns and bore centers of throttle bodies and out of the 4 stock tb's (2 h22's, 1 h23, and 1 s2000) I tried and the one skunk2, the skunk2 was the only one that wouldn't fit without removing two of the pins, and when I swept in the bore center I also found it to be off of location .01" in each direction. All the others were dead on and bore centers were all on location within a few thousanths of an inch. There just happens to be enough clearance in the bolt holes that of the skunk tb that its not an issue with fitment.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bigz187 &raquo;</TD></TR><TR><TD CLASS="quote">kinda off topic...but I wanted to ask the OP how the fitment is on the skunk 2 throttle body to the manifold?</TD></TR></TABLE>

Fitment is ok, but realize that the manifold was bored out at the TB port by the guy that just wrote that paragraph up there
Not a lot of metal between the IAC passage and the main port, but the S2 TB gasket covers it and I dabbed some liquid gasket in the area for good measure. Hopefully it seals but the car is still apart so I can't say for sure yet.

The MAP sensor screws in like stock so that's at least one (major) thing I don't need to worry about. Until I plug the TPS connector into it

 

Thanks for the replies guys So its safe to say that the skunk throttle bodies will fit with minor mod's. What size throttle body are you running, 70mm?

 

68mm

 

If you get worried about the IAC not sealing with that thin paper gasket you can always get some gasket paper (thicker) from pepboys and make your own, all you'll need to do is use a hole punch to make the IAC hole and it should be good to go.

 

I feel okay about it. The Skunk gasket makes it fairly easy since it's sized to match the TB's IAC port which is tiny. Worst case it's fairly simple to fix after the fact.

I might need some gasket paper anyway though because I think without a real gasket the TPS isn't spaced out far enough. Whenever I tighten it down the TB plate's spring doesn't seem like it's enough to control the plate.

 

Damn thats good, my STR throttle body was TOO stiff. You'll be glad to have that problem lol.

That sounds like a good idea though, if it's binding like that it could be starting to damage the tps. Which could be a costly mistake.

 

does it move freely without the tps?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rosko &raquo;</TD></TR><TR><TD CLASS="quote">does it move freely without the tps?</TD></TR></TABLE>

Yeah. Maybe a little sticky upon opening if you let it slam itself shut, but you can see it's working as you'd expect it to.

But if I torque the screws on the TPS down much it starts to act weird. Like not closing all the way or refusing to move. But again I didn't put a gasket on it, so it could be spacing.

 

Skunk2 helpdesk got back to me and said:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Your EVAP purge solenoid just needs to be connected to a vacuum source. T into
any vacuum line off the back of the engine, and connect the EVAP and you should
be good to roll.</TD></TR></TABLE>

I need to dig through my Helms and see exactly how it is supposed to work. Currently, though, I need the car running by tomorrow so EVAP is a little down on the list of priorities, after coolant lines, IAC and that weird fuel smell that occurs with key ON

I took off my FPR to get the rail off and I hope it's not leaking.