BHG removal
 

I searched the forum for a tutorial to change a BHG, but i couldnt really find one. I saw somewhere that someone wrote a step by step guide on what to take off and repair. but i cant seem to find it. I think im gonna do my HG myself, but I need a really good tutorial for a newbie like me. I havent tackled something this big before.

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EDIT
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forgot to mention that my supra is an NA. just so i dont get confused when it tells me to unplug something and i dont have it. lol.

http://www.geocities.com/MotorCity/S.../1636/bhg.html

Here you go. He says Cam position sensor, but it's really the distributor.

Dont forget about cygnus tsrm too.

http://www.cygnusx1.net/supra/library/TSRM/

you can do it !

take your time and mark all the nuts and bolts . hardest thing is pulling off the turbo's oil feed and water feed.from underneath the turbo if you have one that is .

well i have a few more questions about the HG. should i replace any other parts in the block when i do this? gaskets, any other misc. parts? i had a rod knock a few years ago, and i have a partial gasket set, i know i have the intake gasket that rests between the block and the intake. i was hoping i had a HG in the box, but no luck haha. any special tools that i would need to get certain parts out?

sorry for all the questions, i just wanna make sure im prepared and not run into a problem if i dont have a part or tool.

thanks, kyle

A regular tool box should be sufficient, mainly size 10, 12 and 14 mm sockets. You'll need some large hex keys for the head, my uncle custom made some cut from a huge hex nut. IT is crucial to properly clean all gasket surfaces but not to a degree that you scratch major grooves onto the metal. Make sure you sufficiently clean up the block surface (this is especially important). Get the head milled, replace all injector seals, replace any gaskets, make sure you achieve true TDC, and keep track of everything. Get a stock toyota HG, some ARP head bolts and you'll be good to go. I was basically a noob when I did mine, but now it runs great and I didn't have to pay over a G to get it done. Just takes time and patience.

This is a great learning experience. Find a freind and get to wrenching :)

Good luck.

I chose not to have a friend help and make it a true learning experience. I agree with changing the injector seals. I learned from not replacing them the 1st time around. They should be available as an injector gasket kit (each kit services one injector and should be no more than $6 a kit) available at most auto stores. Don't go to the dealer for injector seals, too much money for each gasket and o-ring. Replace hoses as necessary. Some may be dealer only, usually the ones with tight bends, like the 90 degree 3" heater hose on the back of the head ($20).

Pain in the ass items (not in any order):

1) ABS Sensor connected to the top of the tranny.
2) Installing the turbo oil line. (NA is NA[not applicable])
3) Installing the ground line to bottom of intake manifold
4) Install the lower half of the intake manifold before installing the head with the EGR valve too, or it will be a PIA.

I can't really think of anything else at the moment. It's not all too complicated, just takes a little know how, and some time and patience.

thanks for all the input guys. i guess i gotta go out and look for some large hex keys and a torque wrench, cuz i will need them. and i will also pick up the injector seals from an auto store. do i really have to get the head milled? from my understanding, you need to do this when installing a MHG, but not stock. i read somewhere that it wasnt really necessary when doing a stock HG.
also, is it alright to still use the head bolts that are already in place? i was told that ARP bolts are mainly for MHG as well, but it would add extra insurance i guess.

check out www.supras.nl
It's got very good guide on rebuilding a head with pictures.

don't use stock bolts since they are most probably too streched already and you will end up blowing your HG again
buy arp bolts or studs

also you will need to get your head machined if you want your gasket to last long.
for MHG you also need the block machined

Your car is not going to see boost, get the head milled though and use a composite head gasket.

alright, well i just bought a complete gasket set online for my car. so that covers everything i need. and i also purchased some ARP studs for the job.

studs are better than bolts
but studs require you to pull the engine out
so after the studs are in the head can be put back on
otherwise the head won't be able to fit into the engine bay when studs are in

From what I've been told, when using studs if you're not pulling the engine, you put all the studs in except for the back two. Set the head, then install the last two studs.

quick ?
 

how exactly do you set the studs? do you have them torqued in or sealed or what?

ARP studs replace the head bolts. They come with an allen wrench I believe. Not sure how tight you set the stud though, or if they require any special lubricant when you install them. When you're ready to install the head they torque down with nuts, and they can be torqued even tighter than bolts.

Where did you buy those ARP bolts and how much were they?

I am also about to atempt my first hg as I'm pretty sure mone is blown externally(It leaks out antifreeze after heating up on drivers side fron 12" of the engine under my intake and can see it seep down the block.

How much is an avg price of having a head milled?
I got this car as a project the guy who owned it broke a chunk of the egr cooler off so it leaked exhaust and he thought it was worse than it was to fix and I got it cheap and have been doing what I can while driving it but now I need to repair this and don't have a lot to spend (I'm an apprentice with 2 kids )
But I don't want to have to pull it back out a week later and waste the money on gaskets either is there any way to tell If it's really needed or not?
Sry I'm learning most of my mechanics from here or figuring it out for myself.
I would appreciate any and all help anyone could give me,

Thanx