Working on MR2's sucks, All finished! Options

[95CelicaST]

Let me preface this entire thread with this:

I love my MR2. It's a total blast to drive, iconic image with a cult following, and on the off-chance that it isn't raining in the pacific north west it is nice to cruise with the tops off.


However, working on anything in the engine bay is a nightmare.

A couple weeks ago I was coming home from work and I noticed a strange sound coming from the engine bay. It was RPM dependent, but went away after ~ 3000 RPM's. It sounded similar to a wheel rubbing on a fender liner, but I wasn't moving. I got out and checked for smoke or leaks and found nothing, so I babied it home (roughly a mile from work). I pulled it into my garage and shut it off.... and immediately found the problem. I had coolant pouring out from the plastic timing belt cover. The noise I was hearing was the bearing in the water pump failing... and then fail completely.


So I ordered up a new water pump, timing belt, accessory belts, pulleys, valve cover and spark plug tube gaskets, etc. as well as new cap, rotor, wires, plugs and a new clutch kit.

This is where the problem is - there is about an inch between the timing cover and the frame. It's virtually impossible to get in there and replace everything. So after researching it seems the popular - and easier method of doing this work is to drop the motor, so I enlisted the help of a friend from school who also owns a MR2 and we tore into it this weekend. The BGB says the motor will come out the top of the car, but I say nay. After scratching our heads we tossed the BGB and dropped the cross member and lowered the motor to the ground, lifted the body up, and slid the motor out on a creeper.


So this week I will be stripping the motor down and cleaning everything up. I've got to drop the flywheel off for resurfacing and drop my injectors off at Witch Hunter to be cleaned and flowcharted. With any luck I'll get it all reinstalled on Friday.

I just moved and don't have internet yet, so I'm tethered to my cellphone.... which is not an effective way to upload photos. Here are a couple pictures. Hopefully I have internet by the end of the week and can post more pictures.

MR2 with my scoob







And in it's prime...



This post has been edited by 95CelicaST: Jun 20, 2010 - 10:24 PM

[nics]

I hope you fix it soon!

i like your last pic, where was it shot?

[95CelicaST]

It was a local Toyota Owner's Club cruise to eastern Washington. We were going over the mountain pass. It was on I-90, Keechelus Lake is in the background... It was very very cold. I regretted having the tops off. You can even see that my face is wind chapped in that picture.

[nics]

it looks cool without the top. im digging it!

[Random_Stranger]

You seriously had to drop the motor for all that? Crap... Is yours lowered? Because that's a high lift to do it like that. I was wondering if I would be able to drop mine in my green one without having to take it into our shop, just because they don't want any of our cars there over night. Well glad you were able to get all that stuff and got it out no problem.

[95CelicaST]

Yeah I'm lowered on sportlines. We layed the motor on it's back on the creeper to make it as low as possible, but yeah you have to lift it pretty high. The engine lift we were using is a huge marine class lift, so we had the clearance to run the motor mount bolts back through the frame and hook on there to lift, otherwise the bumper would need to come off to get a good lift point.

Took us about 10 hours to get it out, but we had to make a few trips to town and then scrap the BGB's idea of coming out the top. I'm sure it can be done faster with the help of air tools.

[epocsirhc]

That is exactly why I don't own an mr2. My first car was a Porsche 914 which is also midengine and a pain in the ass to do any real motor work on. You want to adjust the valves in in there isn't a chance in hell your knuckles won't all be bleeding. Have fun finishing it all up and enjoying her for many more miles though!

[95CelicaST]

The only plus side to it is being able to take care of everything all at once. And doing the work yourself is quite daunting, but knowing it is done right and knowing every inch of the motor can give you peace of mind. And with me being anal retentive about dirt this has allowed me the time to clean the bay and engine while replacing old vacuum lines and sanding/refinishing the valve cover and whatever else I get my hands on.


To summarize, I now understand why everyone chalks this work up to a good learning process. If you don't know something, you will when you're done.

[presure2]

its all about the learning curve. once you get used to working in that bay it gets a bit easier.
just a bit.
working on a '2 does kinda suck, but hey, at least its worth it!!
good job!

[Bitter]

while its out, do everything else you want to do....like oh replace that CT26?

[mk7celica]

I think he has a n/a so not ct26 not positive correct me if I am wrong

I will be doing the same this weekend. Changing timing belt,turbo,all seals,water pump ectt. I figure do it all know while its out so I dont have to do it later.

[95CelicaST]

Sorry bitter, she's n/a.

Got some work done today. Replaced the oil pump seal, new pulley, tensioner and spring, thermostat, timing belt, cap, rotor and wires. The water pump was all sorts of messed up. The pulley was bent and when the pump came off you could see where the wheel inside had bored away a little bit of the inner housing. I took a few pictures that I'll post up shortly. Valve cover is off and ready to be cleaned.

Also got my speed source brass shift cable bushings installed on the car.

I took off the exhaust manifold to find the #4 cylinder had a massive leak caused by a warpage in the manifold. I will be sanding it down flat and reinstalling (with a new gasket of course).

I think that's everything from today.

pics:

inner water pump housing. the lighter color is where it has been bored away by the old wheel.


Exhaust manifold warpage.



and where I left it for today.


This post has been edited by 95CelicaST: Jun 15, 2010 - 1:56 AM

[njccmd2002]

toss it away, put 3sgte. and moar fun

[95CelicaST]

If I wanted to drive a fast car and get horrible gas mileage I would drive my wrx.

The mr2 is destined to be n/a forever, but that doesn't necessary bind it to only 4 cylinders....

A 3vz or 5vz swap will happen later on, but for right now this 5s only has 100k miles on it.


Perhaps when the time comes the 2grfe swap will be more documented.... drool..... 265whp and stock Toyota reliability.

[presure2]

If I wanted to drive a fast car and get horrible gas mileage I would drive my wrx.

The mr2 is destined to be n/a forever, but that doesn't necessary bind it to only 4 cylinders....

A 3vz or 5vz swap will happen later on, but for right now this 5s only has 100k miles on it.


Perhaps when the time comes the 2grfe swap will be more documented.... drool..... 265whp and stock Toyota reliability.

yea, and ~280whp with an intake and exhaust...YUM!

[95CelicaST]

Then it'll finally sound like a real sports car.

I was behind a NSX on Friday, and their v6 sounds so good!

[nics]

If I wanted to drive a fast car and get horrible gas mileage I would drive my wrx.

The mr2 is destined to be n/a forever, but that doesn't necessary bind it to only 4 cylinders....

A 3vz or 5vz swap will happen later on, but for right now this 5s only has 100k miles on it.


Perhaps when the time comes the 2grfe swap will be more documented.... drool..... 265whp and stock Toyota reliability.

how bad is the gas mileage in the wrx?

2grfe is nice. EPA est 22-30 mpg

[95CelicaST]

Wrx gas mileage depends on your ability to keep your foot out of it, but boost is addictive. I'm averaging 270 to the tank in the wrx. The tank is roughly 14 gallons, so right around 19mpg.

[Bitter]

depending how much aluminum was removed, replace that pump housing.

[95CelicaST]

It was a very very small amount. It wasn't even noticeable to the touch.