Which throttle body kit?

[BAD91LX]

So the new 91LX needs a new throttle body and EGR spacer. Figured it out today what was causing the loss of power and the smell. Looking at keeping it stock for now until I rebuild. What set up has everyone tried with the best results? Thinking of going 70mm. Car is an AOD.

 

[General karthief]

With that car being stock and all I would replace it with stock stuff.
What smell you talking about?

 

[Wayne Waldrep]

If you have to buy aftermarket as we sometimes do, buy once and be done with it. Accufab 70mm...Good from stock to as much power as I've ever made. That said, I have a BBK 70mm this time because of finances and it's been just fine.

 

[BAD91LX]

With that car being stock and all I would replace it with stock stuff.
What smell you talking about?

It has like an aerosol smell. There is a lot of grease and grime coming out of the TB and EGR spacer. I ordered a kit to replace them from LMR. Went with a SVE 70mm. I read that 65 and 70 would be great for stock and 75 for minor upgrades and 80 for forced induction.

 

[TOOLOW91]

It has like an aerosol smell. There is a lot of grease and grime coming out of the TB and EGR spacer. I ordered a kit to replace them from LMR. Went with a SVE 70mm. I read that 65 and 70 would be great for stock and 75 for minor upgrades and 80 for forced induction.

I’ve made 740rwhp with a 70 ..... if the intake size opening isn’t the same size as the throttle body bigger isn’t always better.

 

[General karthief]

Replacing dirty parts ain't gonna fix it.
aerosal smell? Show some pics

 

[JD1964]

Unless you upgrade the intake, a bigger than stock TB is not gonna help. The opening in the stock HO intake is smaller than 70mm. Stock GT40 intake opening is 68mm. And I think the stock HO intake is even smaller.

While TOOLOW91's example beats me easy, I make 400hp at the rear wheel with a stock explorer TB which is 65mm.

 

[JD1964]

....it especially isnt gonna help if you're still running a stock 55mm MAF

 

[revhead347]

It has like an aerosol smell. There is a lot of grease and grime coming out of the TB and EGR spacer. I ordered a kit to replace them from LMR. Went with a SVE 70mm. I read that 65 and 70 would be great for stock and 75 for minor upgrades and 80 for forced induction.

Forced induction reduces the need to increase the cross sectional area of any part of the intake assembly; that's the point of it.

Kurt

 

[CarMichael Angelo]

Replacing dirty parts ain't gonna fix it.
aerosal smell? Show some pics

How is showing a pic gonna tell you dick about how something smells?

 

[JD1964]

Forced induction reduces the need to increase the cross sectional area of any part of the intake assembly; that's the point of it.

Kurt

Agree. And, cramming air through a smaller opening increases the velocity and that helps mix the air/fuel up good

 

[General karthief]

How is showing a pic gonna tell you dick about how something smells?

i have smell-a-vision.
you know that sometimes something can be obvious but an untrained eye can miss it.
humor me old man.

 

[TOOLOW91]

Forced induction reduces the need to increase the cross sectional area of any part of the intake assembly; that's the point of it.

Kurt

I concur , my point was more along the lines of he didn’t need to spend the money on a oversized throttle body .

 

[BAD91LX]

Still went with the 70mm Now looking at buying the intake. Never seen this before so not quite sure why it looks like this.

 

[Hoytster]

Still went with the 70mm Now looking at buying the intake. Never seen this before so not quite sure why it looks like this.

Looks to me like that's buildup from the EGR cooler plate gasket leaking coolant, which could also be leaking into the intake and engine. Have you noticed any coolant loss?

 

[BAD91LX]

No I haven't. Car ran fine all the way back from California and never overheated even in the 109 temp. Just have power loss when I first step on the gas so no giddy up on it.

 

[General karthief]

Likely fuel pump.
that buildup looks to me like electrolysis, if it's kinda powdery, it's a condition when liquid flows through aluminum with steel parts like bolts or in this case studs. Gasket is definitely leaking. A new egr spacer and throttle body with new studs/nuts and washers are in order.

 

[General karthief]

How is showing a pic gonna tell you dick about how something smells?

so what's that picture look like to you?
that seeping egr spacer could be the cause of the aerosol smell right?

 

[Hoytster]

No I haven't. Car ran fine all the way back from California and never overheated even in the 109 temp. Just have power loss when I first step on the gas so no giddy up on it.

I wouldn't expect there to be significant coolant loss if that leak is just on the outside. Probably just seeping through and causing the buildup you are seeing. I agree with @General karthief , you def. need to fix that issue but that shouldn't be causing your loss of power.

 

[BAD91LX]

I wouldn't expect there to be significant coolant loss if that leak is just on the outside. Probably just seeping through and causing the buildup you are seeing. I agree with @General karthief , you def. need to fix that issue but that shouldn't be causing your loss of power.

Guess I will fix this issue then go from there.