SR20DE-T Head Removal

[dickie]

by mrzabala

Overview: Please read this DIY before starting.... I took off the head on a rwd s13 redtop SR20DET engine. With pictures and information, I have comprised information that will help you to do this. I will also have a DIY on installing everything back together (stock wise).

Difficulty: - ****1/2

Time: - 10+ hrs

Cost: - $500+; up to $1,300

Tasks: Many things can come from removing the head.-Rebuilding head and or block-Inspection of all internal parts and engine-Replacing seals, parts, upgrading, etc.

Tools:`Hammer`flathead screwdriver`screwdriver`8,10,12,13,14,17,19,24,27 mm`10mm allen socket (1/2 preferred)`torque wrench (1/2 preferred)`ratchet 3/8, 1/2`set of wrenches`wd-40`penetrating spray`adjustable wrench`breaker bar 1/2`impact gun 1/2 (for crank pulley bolt)`magnetic wand`tray

Time: Depending on how fast you work and your skill level, it should take you about 30min to 3hrs. Note that having the engine out makes it much easier and cuts down the time.

I have my engine out of the car already for this writeup.

Procedures:

I have the pictures here:http://s26.photobucket.com/albums/c140/mr3kgt/. If you are planning to do this than I should not have to go into great details about the pre-removal parts and liquids as this takes a bit more mechanical skills. For bolts, screws, and washers, I highly recommend you put them back as soon you remove the parts to keep track of them. Make sure to keep everything in order the way you took them out.

FSM pictures from s-14 SR















You want your camshaft sprocket and chain matting mark lines up as shown in the fsm and in the pictures.-At this point, you do not want to turn your crank again. Make sure to loosen the crank pulley bolt with a impact gun. I highly recommend doing it with a impact gun especially if the engine is on a stand. If it still has the transmission, you just have to put it into gear or pull the e-brake up.

-Use the 27mm socket and breaker bar on the crank pulley bolt. Turn in clockwise (to the right) motion until you have set it to the marks on the sprockets matting marks and chains silver links and have your No.1 piston on TDC (2nd line going from the left).

-The best way to check is to have good lighting and looking back on the fsm. It takes some people a couple turns or even 60, it all depends. It should turn out like this. Remember not to turn your crank pulley or cams separately.













-Remove the bolts on the chain tensioner.-Slowly pull on the tensioner. You may have to use a flat head but be very careful as it will snap back real fast causing the chain to snap.-Now remove the Crank Angle Sensor(Camshaft position sensor) -CAS. Its held by 2 screws (one of mine was missing... sigh).-Now like the tensioner, slowly and carefully pull it out





[img]http://is.rely.net/3-99-7945-l-UN6K0qBS ... CA.jpg/img]



- Remove the timing guide plate.





-Remove the camshaft sprockets. I'm not sure what size the bolts were as I resorted to using an impact gun and socket (no number on it). Its 2X.-Use an adjustable wrench or if you have the suitable size wrench to hold it on the hexagon portion. Make sure its slim as I didn't have one.



-As the fsm's next step is to remove the cams then turbo, you should have already removed the turbo along with the intake manifold beforehand.



-Remove the camshaft brackets bolts in order as shown in the FSM or in the picture with I believe a 10 or 12mm.



-Remove the tubes and baffle plate.





-Should turn out like this were you can see the rocker arms and the HEAD BOLTS!!!









-Remove the outer bolts which is 4 in total with a 10mm and 12mm socket, extension and ratchet.



far left near the oil catch can



Below the water neck



2 in front of the chain



Probably the most difficult part in terms of bolts. This suckers are on tight and prepare to have an extra 10mm allen socket (thank you lifetime warranty).-Make sure to remove this in order and to do it in steps. This is where the torque wrench comes into play. I believe that this head bolts are on at around 120ft. lbs. You want to do it in 2-3 steps so for example start at 120, than 90, 60, 30 ft. lbs and remove. This all depends on how tight this are as if you check the fsm torque ratings for installing them, there only at 78ft lbs after all the other steps. Try different methods to break this suckers loose. Ive read people using hammers, breaker bars, and torque wrenches that all work. Do not do this with an impact gun.







- I used a screwdriver to hold the chain from falling, you will end up having to to remove the head. Make sure everything is clear as its not attached to both head and block.



-Tilt the head left and right carefuly as the chain guides get in the way.I didn't have anyone to take pictures of that but you will see what I mean.

Place it on a flat surface with rags, pillows, blankets, etc so that you dont have it scratched, warped or anything bad. Don't flip it upside down unless you remove all the rocker arms. If you remove them, keep them in order the way they came out.





If you use this pictures or any information, please contact me first at [email protected] for permission.