Ryan280

Question. I've seen that the 240sx TB bolts up to the intake with a spacer. Is there any other TBs that will work? Are the 84+ TBs any bigger? I have a ton of those at my local bone yard.

Is there anything I can use from those newer Zs?

NismoPick

Only the KA24DE / SR20DE has the 60mm TB. The VG TB's are slightly bigger bore than the L28, but not much.

ShadowWulf

Spacers custom made or can they be purchased? (asking because im on my way to the bone yard in like an hour)

NismoPick

Both... you can have one made, or buy one from Pallnet or Jskinnovations (JSK doesn't make many anymore).

I just had a neighbor up the street from me make one w/ his CNC machine.

skittle

if you can get a hold of a webber 62mm t/b it bolts right up to the l28 intake no spacer needed.

NismoPick

The Webber TB is a 60mm inner bore, but yes it just bolts on w/ no needed spacer.

Ryan280

Still new to the engine codes here. What cars had KA24DE / SR20DE? How would I tell a webber 60 from others? What cars did they come in?

Nismo, your the info man. You remind me of a guy on my F-bod boards. He is a good guy too, willing to share data/info. Thanks!

NismoPick

Werd.

The KA24DE came in the 240sx's. SR20DE came in the G20's. The Webber TB was an aftermarket TB. MSA & BDA sells them sometimes.


EDIT... remember just adding a 60mm TB will do nothing for you. It should be used w/ other mods to increase air flow.

snwbrderphat540

unless your turbo! i have a question to add, when you change the TB does your stock TPS mount right to the biotch? or do you use the TPS on the 240sx TB

NismoPick

You can use the 240sx TPS w/ the 280zxt ecu. The 280zx n/a ecu requires the third pin which is a switch.

snwbrderphat540

really? hmmmm.... i think i have a PM to send now. to justin!

lww

Any throttle body can be made to fit if you have a lathe. That's what makes the 240SX TB work. The spacer is carved out of a block of aluminum by a lathe.

The 240SX TB just happens to line up just right, but is about an inch shorter than the 280ZX TB necessitating the spacer.

The Weber "Big Throat" TB was made specifically for the 280ZX and is a direct bolt-on, although I had to use a linkage from an XJ6 Jag to make the throttle cable fit perfectly.

Weber no longer makes this part, which is why the 240SX option is the most popular as it requires the least amount of machining to make the spacer making it very affordable and the large number of 240SX's available in the junk yards provides an easy place to source the TB for cheap as well.

entropy31

just like to reiterate that this mod gives NO gains unless supported by other mods.

skittle

yeah thats why i am still holding on to my webber until i decide what to do with it. It came with my 78 when i bought it. It was sitting in the back where the spare tire should be.

Ryan280

Yep very aware of minimal gains. I also found a use for my stock injectors that came off my TA. I didn't know they would fit with the addition of a rail. Sweet!

Just planning on Cam, headers and TB for the time being. Funny I owned a G20 like 2 mos ago and junked it, spun a rod, a week later in-law gave me the Z.

I at least know there are a few G20s & 240s in my bone yard here.

Sweets

hehe

NismoPick

WHAT! You flat out junked a G20?

snwbrderphat540

you coulda done an SR turbo swap in it made a sleeper lol. G20's arent anythign special but i wouldnt have junked it

Ryan280

Trust me I thought about ALL THAT! But the Trans wouldn't hold HP, TOO much sludge in the heads and wipped out the cam, so I got other ones for $10 at the bone yard and man the car woke up but I knew it was a matter of time before it went. Sure enough....I look at it this way I bought it for $200 got a free pearl white paint job(buddy), got ac working cold while I rebuilt my TA engine. Looked good outside but inside was rough so after all that I still got 150 from the junk man...Oh well....Look at it this way if I had the G20 there would be no Z.