Q45 90mm throttle body for my KA-T project

[s13driftfire]

I just ordered a Q45 90mm throttle body for my ka-t project, (because I have heard all the hipe about the need of this piece to make big numbers)

Question#1 Is this a direct install or do I have to modify anything it in any way??

Question #2 How much gain do I get with this throttle body??

Question #3 I also have a 300zxTT maf N62 I will install aswell what the best way to connect the two?? What hose, do the already sell something or do i have to make something up?? (only a 10mm difference)

thanx in advance for the help and input.

[AZhitman]

Ummm, I've never heard such "hype". It's unnecessary.

The Q TB is commonly used by RB guys.

1) No. The flange is different, it won't bolt up to your manifold.

2) Nothing. I'm running a TON of power on the stock TB.

3) Now, that's useful - Place the MAF at least 18" from the intake, unless you're doing a blow-thru MAF, in which case you don't want it too close to the TB.

[hannibal]

Like Greg said, the Q45 throttle body wont give you any extra power. Its usually used with an aftermarket or custom intake manifold. Or if your making so much power that the stock TB becomes a restriction (that would be gobs of power).

Assuming youre doing a blow thru setup, you should have some piping (aluminim or stainless steel) connecting the MAF to the TB. To connect the piping to the TB or MAF, you can buy 'transition' rubber couplers that have different diameters on each end.

[s13driftfire]

thanx, I guess I was given the wrong info!! I guess these might be one of those lessons to be learned!! hey by the way, you guys said your are making big numbers what exactly did you do?? I am looking for info to make a decision!!!thanx

any info you can give I would appreciate!!!

[WDRacing]

Hey bro, welcome to KAT. This is definitly the place to come for all your questions. So you're on the right foot there.

How much power are you looking for exactly. Since there are about 9 bazillion(thats an actual number) combos's to choose from. It'll be easier to assist once we have things like a budget, HP goal, whos doing the work, can you weld...etc.

Fill in those blanks and I'm sure we'll be able to hook you up. Or hit me up on AIM WDRacin.

WD

[AZhitman]

Do LOTS of reading here in the KA-T forum.... You'll learn a ton just by perusing prior posts.

[s13driftfire]

Cool, thanx

I am looking for 400whp, I don't know how to weld, I would like to do the work myself but have some experience not a whole lot, my budget is somewhere around 3k (but I am not driving the car, I am going to build it slowly so if its more I can handle it).

I have a 1990 240sx with SOHC, but I already purchased the DOHC DE, with harness and ECU. I also have the N62 300zxTT maf.

I want to build the bottom end, lower to 9:1 ratio with forged pistons and billet rods. From what I understand this is the only thing I need to do for turbo. the head should be untouched, except maybe cams (wolf)

What you think, any input will be great appreciated. (going home now, will be back later tonight)

[AZhitman]

$3K is unlikely to cut it unless you do ALL the fab, and ALL the machine work / assembly yourself.

You're going to drop $1000 on rods and pistons, machine work (plan on $500-$700), IC piping (since you don't weld you have to buy it prefabbed), an IC, injectors ($300), engine management (another $500-$1000), turbo ($400-$700), gauges, bearings, head gasket, head studs, assembly labor, oil lines, fuel pump, clamps, good oil pump, silicon couplers, fuel system, fluids, etc etc etc.

From my experience, 400 hp in a KA will run you $6-7K IF you do a lot of the work yourself.

Fortunately, 250hp in a S-chassis makes for a fast street car, and can be accomplished for much less money.

[hannibal]

^

Aim a bit lower (300-350whp) and you should be able to skip the rebuild. You can turbo a KA for about $3000, but certainly not build it with forged internals AND turbo it.

[WDRacing]

I agree, low budget and big power are NEVER going to happen. Your best bet is to look at turbo kits. Since custom work is expensive unless you have friends to do it for you. A kit will include everything you need for a stock block. But they aren't cheap either.

I'd say the cheapest, most reliable way possible would be a JGS manifold, turbo, downpipe wastegate combo. Then you need to buy an EBAY intercooler, EBAY IC piping and some type of fuel/ignition managment. Tuning it is a whole different story.

Spend a month reading everything there is to read about forced unduction.Then start making a list and add $500 to whatever number you come up with.

WD

[ConsumingFire]

This is still s13driftfire, I just go by another name from my home computer!! Thank you very much for all the info, I will definitely take it all into consideration. But like I said earlier, I know that I might of set a low budget but I am not driving it daily and I have nothing but time on this project car. So I will take my time with each step and do it right, if it takes me $6-7k to do then I will do it. thanxI will continue to ask questions while my project is coming along.

thanx