Savington

iTrader: (31)

Got one as soon as I could get my hands on one, yes. One junked $4000 race motor is one too many.

triple88a

iTrader: (2)

Sav, have you guys done any testing on that? A replacement for that ugly upper manifold piece?

Savington

iTrader: (31)

? I don't know what you're referring to. A replacement upper intake manifold?

triple88a

iTrader: (2)

You know how the manifold is split into 2 pieces? The upper piece of the manifold has a wimpy 2" diameter bottle neck right after the throttle body.

Savington

iTrader: (31)

The stock manifold does. The squaretop improves on that drastically, and any aftermarket intake manifold does as well. I have no idea why you would bother replacing the upper half when you could just change the entire thing and see even more of a gain.

TurboTim

iTrader: (9)

OK so a replacement top half that is similar to the square top and has a throttle body flange for the small ford pattern (I used a $45 shipped 65mm crown vic TB. Included the TPS/pigtail & works with the miata throttle cable end). Should be doable for less than an entire new intake manifold. No whistle on the ford throttle bodies cause no IAC. bwahahaaha. Simple fix with another bracket.

triple88a

iTrader: (2)

Hmm whatever came of the top mount throttle body, intake manifold begi was working on? Sure probably looks funny but if it gets rid of the uneven flow why does it matter?

hustler

iTrader: (6)

The whistles go "woo".

MartinezA92

iTrader: (4)

So lets say that I wanted to wait on buying one of these because of a lack of funds at the moment. Is welding or JB welding the screws on the stock one an acceptable temporary solution? Does it stop the engine from ingesting the screws or does something else get swallowed when the throttle shaft breaks?

hustler

iTrader: (6)

Use two-part epoxy. I do it on throttle bodies and VICS butterflies.

DeerHunter

Have the VICS butterflies been known to fall apart, or are you just being extra-cautious?

MartinezA92

iTrader: (4)

Is JB weld basically a two part epoxy or am I about to make a horrible decision?

rleete

iTrader: (21)

Yes, JB Weld is 2 part. It's also one of the best available for metals.

hingstonwm

iTrader: (2)

Here is the throttle body on my 1.6 car. It is also available in the 1.8 version. Last I checked cost was $ 410.00 plus a core.




$400 is expensive for a throttle body but whats an engine cost?

triple88a

iTrader: (2)

Uck for 400 bucks i'll look for alternatives

Savington

iTrader: (31)

Not to be a dick, but this is basically what everyone who's never broken a throttle shaft is going to say. I have a $4000 built motor in pieces in the shop because it ate a throttle screw - I would have gladly paid $1000 for an upgraded throttle body a year ago had I known it was going to break 8 hours after installing that motor.

If you don't think it's worth $300 or $400 or whatever, just wait until you're replacing a motor because your OEM TB broke. That's usually pretty convincing.

AllSystemsNominal

Pretty sure I remember Emilio saying in a post that he does this on his track cars and hasnt had a TB shaft failure since

AllSystemsNominal

Throttle shaft breakage - Page 6 - MX-5 Miata Forum

post#140

Savington

iTrader: (31)

A lot can happen in a year.

mx5-kiwi

Does this happen to the 1600 TB as well?