Engine with or without vacuum pump

I have a 2016 TRD Sport 3.5L with a blown motor, I am buying a new motor for it, and when searching for the motor, it gives me vacuum pump and non-vacuum pump options, which one do I need for my TRD sport, I cannot find a definite answer anywhere in this forum

 

With pump.
Only or and pro come without

 

^^^this^^^

what happened to your motor? how many miles?

 

Read post #4 and #5.

https://www.tacomaworld.com/threads/18-trd-vacuum-pump-vs-non-vac-pump-motors.759101/

 

141,000 miles, not sure exactly what happened internally, was driving about 45 mph at 3000 RPMs and it blew out the cylinder head and blew the plugs and coils out of the head

 

So it just shot the spark plug out? Time sert or helicoil may be all you need.

 

The engine does not make enough vacuum by itself to run a vacuum brake booster. As such, the easy way to know whether you have the pump or not is to look at the brake booster. If you have a vacuum brake booster, you have a vacuum pump. If you have the electronically controlled hydraulic booster, then you don't.

Or memorize it by trim. TRD Off-Road and Pro have hydraulic boosters, so they are the ones without vacuum pumps.

Sorry to hear about the blown engine. Another one bites the dust.

 

It completely blew the head out

 

Why did they go with electronic power brakes for the TRD OR and PRO?? sorry to hear about your engine...

 

To work alongside the crawl control system

 

It’s part of the off-road traction control system which includes, depending on transmission, A-TRAC, Multi Terrain Select, and Crawl Control.

BTW, I think term electronic is misleading as I think it is actually hydraulic.

 

It is true that in the Tacoma, you gain Crawl Control/MTS or A-TRAC by having the hydraulic booster. However, that doesn’t really confirm “why” the hydraulic booster was used. Toyota offers all of those features via normal vacuum booster ABS module setups on other vehicles. Why Toyota chose the hydraulic booster for the off road oriented 2G and 3G Tacomas is not really known.

For the 4th gen they have gone back to vacuum pumps with vacuum boosters and normal ABS modules on all trims. No more hydraulic boosters.

 

Are you implying that the reason for the hydraulic brake booster might be to run the inclinometer?

 

Not really implying anything, just saying that to my knowledge, offering the offroad features was fully possible without using the hydraulic booster, which makes me say I’m not sure why the hydraulic booster was used.

I could be wrong on MTS and CC, I know for sure ATRAC has been implemented on other vehicles with vacuum boosters before. But I’m pretty sure the others had been accomplished before as well. They’re definitely offering all 3 modes on the new truck and the new truck does not use a hydraulic booster at all.

 

I understood you. I was trying to be funny. I added a smiley face in a comment too late.

To your point, my thought is that engineering is about trade offs that people outside the inner circle often don’t know. It’s hard to pass 100% judgement without an investigation.

I did I tiny amount of online research on the differences between vacuum and hydraulic brake boosters and came up mostly empty. Hydraulic seems to be more robust but also more expensive. So my thought is that they originally thought the more robust hydraulic booster was the best choice but then changed their mind and went with the cheaper choice.

 

I can't really see what happened from just that pic. Is the plug or the head stripped? Can you get a better shot of both threads? You by chance change the plugs recently?

Did you take this somewhere or do you think you need a new engine?

 

I’m still seeing an attached head as well. I do see a spark plug out of place though.

 

right, the brakes are hydraulic obviously but the power assist is electronic. I can feel it when I turn the key on without starting the engine, the brake pedal gets softer. I had a chevy half-ton for a few months that had electric power steering... that thing was a POS.

Kinda cool I guess, if the engine dies going down the highway you'll still have good brakes. doubt that would ever happen though. Or if you're broke down being flat towed by a buddy.

 

It’s actually a hydraulic booster but it is electrically powered. There are other types of boosters where they are electrically driven, but that is not what we have.

Also, if you lose engine power, it will be harder to stop than if you had the vacuum brakes. You can still stop but it will require lots of foot pressure.

 

Is tat a piece of the head at the 2 o'clock by the spark plug? Brownish and rounded?