Damn, the first time I post and the server crashes and losses it. I was getting some good info too.

Anyway...it's time to move on. I was cosidering a conversion with either the Gt35/40 or the XS t04s, but someone told me that I can't retain the stock air pump with either of those (I think it was 1fookinTiteFD, but I can't be sure.) He recommended Apexi or HKS. The Apexi is too small for my taste. The big question is which turbo that allows you to retain the stock air pump is closest to the characteristics of the GT35/40 (IMO a nice balance between quick spooling and power)??? Are the HKS kits more expensive because of the manifold? If not why?

 

I will offer you what I know.. I am pretty sure that the Apexi kit allows you to use the airpump. I know for a fact that the HKS TO4E kit allows use of the airpump as well, I have that kit on my car. The other HKS kits do NOT allow use of the airpump as far as I know, they use a different manifold that places the turbo futher up/forward in the way of the airpump. The HKS kits are bit more expensive than say the XS kits for a simple reason, they are put together better/more complete in my opinion. HKS leaves nothing to chance, every little bracket, hose, heat tape, shield, everything comes in their kit.

To get what you are looking for it sounds like you need to go custom, probably with the HKS cast manifold (the SS manifold mounts the turbo in the way like stated above), HKS wastegate, and some sort of dual BB turbo with a T4 flange and a nice big A/R.. and of course custom DP, intake, oil lines etc.

Matt

 

Can anyone thell me why they do this? Is it because of a larger housing that would have interference with something else if used with the same manifold from the t04e?

 

I believe all HKS kits let you use the stock airpump. I know the T51R Kai works with it. That is one of the reasons why I'm going with that kit.

And another reason for their kits being so expensive are the three little letters "HKS"

 

mjw- you sure? I have the to4e also and without modifying it the airpump won't fit. The intercooler pipe mount attaches to where the airpump would mount, and the compressor housing interferes with the airpump body.

I have modified the compressor housing, airpump, and intercooler pipe so that it does fit, and it required grinding, cutting, and welding.

 

I stand corrected if that is the case, never seen one in person. Doesn't the little bump-out for the EGR on the LIM also get in the way on that kit?

 

hmm.. I am pretty sure I could get my airpump to fit easily, there is a lot of room there. The IC pipe I got with it runs basically the same way the stock crossover pipe does, mine mounts to where the plastic pressure tank used to be. Plus on my instructions it shows how to install the turbo with the airpump system, there is a bung welded on the intake pipe for the air pump system and they include all kinds of tubing and a filter for it. The finished install pictures show it with the airpump and stock IC.. not that anyone would do that.

Is your kit from HKS?

Matt

 

HKS T51 Kit fits



Even shows where to buy one!

Your inspectors must be more strict in BC. When I took mine in in ON the didin't notice it was missing.

 

All of the HKS kits should retain the Airpump. It's all about the manifold design, I've seen 2 HKS kits that retained the air-pump. Also the Nex Apex-i kit retains the airpump as well. The GT35/40 kit cannot fit with the airpump, although it's an excellent turbo. I have heard that the XS engineering kits fit with the airpump, but I've never seen this, so it's just heresay at this point. I would call XS and check. I still can't decide on which kit for myself.

eric

 

Yeah, the LIM needs some modifying or a J-spec LIM.

L.G.

 

Tyson - our emmisions are pretty strict - not like califonia, but they class all passenger cars the same. I need to pass the same emmisions as a 1993 Hyundai Pony as I do with my RX-7. Not a chance in hell of passing without a working airpump and a cat. I could barely pass after installing a brand new Bonez hi-flow. If anyone has any ideas on how to get around this I'd love to hear them.

Can anyone confirm this? The pictures of the XS T04S kit look like it would fit. The manifold looks a lot like the HKS.



No I would dream of that, but I would like to go with a large SMIC

 

Do you guys know if the air pump can be retained for
the HKS T04R kit?

 

I find it hard to believe that with all you guys that have the HKS T04R kit and the XS T04S kit that no one knows if you can retain the air pump with these.

Come on guys....inquiry minds want to know!

 

I believe that the t04r kit lest you keep th airpump

 

A suggestion. Get whatever single turbo Kit you want and get an electric air pump. (There are many posts regarding this). It is a third the weight and can be mounted in multiple places. Works like stock and looks great.

 

That's a great idea. Why didn't I think of that!!
Hmmm...I wonder when the search function will be up again...let's give it a try

 

If it takes too long for the search engine to come back online, give Dave at KD Rotary a call. I know he installs them on a regular. The unit is an AC Delco unit from a Corvette. 96 to 02. He may give you some info on the install and mounting spots. Good luck.

 

Aimedhigh, The reason I'm looking at different single turbo kits that retain the Airpump, is I live in California. I need the airpump there to pass visual. I'm sure the electric air-pump works, but the SMOG ****'s in California won't pass it.

eric

 

They won't pass a single either, if you are going to go single turbo in CA then worrying about the air pump is a moot point to me unless you want to use a hi-flow cat or something.

 

I am still curious to know if the HKS T04R or the XS T04S can retain the stock air pump. If anyone knows for sure please post.

I'll definitely be looking into the electric air pump alternative in the mean time though. Thanks again for the slap upside the noggin....I think it's working properly now.

 

some of the hks kits have a carb exemption

mike

 

I know the HKS will retain the smog pump but the XS kit won't

 

I know they do for the FC, but I am not aware of any for the FD? If there is one for the FD I would love to know about it.. here is a good carb link to check out what is legal.

http://www.arb.ca.gov/msprog/aftermk...es/devices.htm

Matt

 

mjw- I misread your first post. I thought you were talking about the XS kit allowing the airpump. So I'll agree with you and 1Fookn- an airpump does not fit with the XS kit (but it can with modifications).

I didn't go with the electric pump because I want it to work all the time, not just when I'm getting smog tested. I didn't like smelling the exhaust all the time, so I wanted the airpump working to clean things up. And as has been pointed out previously, the electric pump isn't made to work continuously.