Tire Shredder's MK2 7MGE budget NA screamer build thread

[Tire Shredder]

Very interesting Steve. Is this break-in procedure something you've established or did you get advice from someone else? Do auto manufacturers use a similar method? :icon_conf

something from my own knowledge, what I've read online, car magazines and confirmed by my machinist (whom has done this many times).

when you think of it objectively, this is definitely the best way to do it. you should get the results you want on the wear front, while remaining conservative enough to avoid the major pitfall of break in (glazing).

there is minor break in of seals, heatcycling of metals and many other things that happen. but bearings should constantly be under hydrostatic flotation meaning they should never touch. Thus, your process should largely be decided on the break in of the rings.

 

[Tire Shredder]

just a small update to keep you guys happy for the weekend.

Iran out of sandpaper for the valve cover so I can't finish it, but I did get some more painting done, and I picked up a couple things!

first, my alternator. It's basically fully rebuilt now, I asked them to clean it up but once they opened it up it didn't make sense to not throw new brushes on it and have them clean and re-varnish the windings too...bearings are a must as they are damaged when the case is split. regardless, it looks sweet, and I can depend on it to keep my battery full of electricity.

secondly, I got a small package from toyota. I accidentally ordered two bypass springs for the oil pump (one from raptor racing) but they are dirt cheap. this is for a cressida 7m oil pump, which is most likely the same. maybe this part number will be helpful to somebody.

I also got all new clips for the front of my car (grill, turn signals, and foglights.) half a broken, and a good investment I think!


I'll post pictures of the valve covers tomorrow when I finish it.

 

[Mk3runner]

I remember that little spring, shimmed it 5mm and oil pressure ahoy.

 

[upgradedsupra]

New and clean parts FTW!! :love:

You think it will be ready for the PacNW meet?

Duane

 

[Tire Shredder]

haha thanks. I love them too duane!!

most definitely be ready for then, that's my target date, but for a different reason...the 13th annual toronto supra club (my club) meet is on that weekend and I can't miss it for the world. drag racing, show and shine and cruises...on top of that, I've hardly been to any monthly meets in the past year....(university classes late at night, family functions, working, and fixing the car.....all working against me) I feel guilty about it and can't wait for it.

 

[Tire Shredder]

no packages yet...early next week I'm told. so no assembly this weekend. I have some paint touch up to do and lots of organizing though...

I just ran some calculations... with a total of 0.048inches of material removed from the head and block, I am 0.2mm away from the engine being interference...throw in some thermal expansion and I'd say it is an interference motor! haha! cool!

final compression ratio is 10.2:1 perfectly safe for the shell 91 octane I want to run with a decent safety margin...peeeerfect.

more pics this weekend!

 

[Tire Shredder]

progress today! very time consuming, but I did make a dent in the project.

first, the bottom end assembled! I cleaned everything (again) and checked all of the ring alignments...applied copius amounts of assembly lube and popped all of them in! everything went in super easy...with a coat of engine oil on the cylinder walls. This assembly part of the engine build is turning out to be fun...I love dealing with nice clean parts!

hard to believe those are original pistons eh?

bottom tightened up

an artsy one of the torqued rotating assembly

and I kept sanding the valve cover...It's painful, so I had to get some help!

after about 4 hours, I finally got a uniform finish out of it. now the easy sanding steps follow....god, I wish the casting wasn't so crappy!

that's all for now. more updates tomorrow.

 

[Zumtizzle]

Great Build!

Should have went with Arp Rod Bolts Bud!

 

[Tire Shredder]

Great Build!

Should have went with Arp Rod Bolts Bud!

thanks.


meh, even with upgraded camshafts I don't plan on exceeding the stock redline. stock will do.

 

[wiseco7mgt]

Thats a very dark looking beer, almost looks like home brew ...better let me drink it for you..lol

 

[Tire Shredder]

it's actually kilkenny...delicious creamy goodness. I usually try something different every time, I have no brand loyalty..but this is one of my favs.

 

[BLACKCAT]

Excellent work & even better pictures.
Dont forget to check that you have enough clearance for the two dowel pins. Would file them down a bit just to be sure.
Also recommend replacing the coolant bolt & pipe at the back of the head.
If you are using the standard cams I would suggest installing the turbo intake cam as it has 10 degrees more duration.

 

[Tire Shredder]

excellent suggestions black cat! I had not even thought to check if the dowels were too tall now.. I bet they are!!! THIS is the reason why I made this build thread, awesome!

coolant bolt and pipe? hmm you mean the heater union mounted to the head itself? it wasn't leaking and I coated it with POR-15....adjuster suggested way back when to just leave it if it's not leaking as it can be seized/ caust problems with the threads.

all rubber hoses are being replaced...

good call on the cams. I actually have a turbo cam set here too...but it's already shimmed, and I kind of want to see what it will do with the stock camshafts.

Steve

 

[Poodles]

The dowels won't bottom out easily...

The coolant union on the back of the head sucks. If the bolt breaks (likely) it's not easy to get out. The only reason I'd remove it now is if the fittings where eroded badly (one of mine was).

Don't know about duration, but I know the turbo intake cam has a bit more lift. It may help, it may hurt low end torque, so I think you did the right thing...

 

[Tire Shredder]

finally got these babies back! looks like they were in good shape before the cleaning! but now I can count on them for a few more years of operation.

 

[Tire Shredder]

well, surprise surprise...I didn't get as much accomplished today as I wanted to!

but I did get all the sanding and the first stage of polishing done on the valve cover. it only needs about another 45 minutes worth of work and it will be done, but I've got to get to sleep so I can work tomorrow. of course, pictures tomorrow. but here's a teaser for now!

 

[SupraRon]

Shiny parts. I likey! :aigo: You gonna have this ready for Friday? Would love to see it.

 

[Tire Shredder]

Shiny parts. I likey! :aigo: You gonna have this ready for Friday? Would love to see it.

I'm planning on missing the meet. start taking the engine out friday, cleaning and preparing saturday, have the engine in by sunday. I have all of next week off to work out any bugs and get the thing working properly...


I'll be there for all three days of the big meet on the 15th to 17th! and beating the shit out of this thing at the track...if things go my way!

 

[BLACKCAT]

Have you checked the fuel filter, cleaned out the pcv pipe (including the throttle body vent) & ISCV?

 

[Tire Shredder]

just got off the phone with witchunter.

the bottom numbers should be 309 across the board. there was an error in his excel sheet for the multiplier. My injectors were run on a 20 second cycle for measuring flow rates and then he multiplies them to get the cc a minute in the spreadsheet. His excel sheet had a multiplier of 2 in it instead of a 3 (he was doing 30 second tests earlier that evening), thus why mine has a flow rate of 206.

he apologized for the mistake and double checked using his database. historically, the injectors flow between 308 and 310cc a minute, the odd one goes to 312 but he considered those anomalies. He apologized for the error and assured me they are operating like brand new.

black cat, I have a new 5mge fuel filter ready to go on from toyota, the ISCV is clean and so are the PCV pipes. I will be installing a catch can, which I just got the hoses and clamps for yesterday.

Steve