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Rb25 Head Removal

Stealthynsa
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Stealthynsa Proficient

Stealthynsa

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Posted

hey i have a socket set and i have ur normal tools. shifters spanners and screw drivers...

i looked under the rocketcovers and i notice there are allenkey bolts for the head...

can someone tell me what size these are so i can go buy it and

any other tool that i might need in the process of getting the head of the rb25

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Stealthynsa Proficient

Stealthynsa

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are they about a 10mm allenkey? ul need a breakerbar id imagine, with a socket that fits a small 10mm allenkey fittin into it. rattlegun and air rachet make things easier haha.

yeah dont have a airgun >.< but thanks

also will i need a new headgasket and is there a certain way i have to tighten the bolts back up and or certain strength?

TRB-001 Rising Star

TRB-001

Posted
Posted

lol if u havent pulled a engine apart before i would not be attempting it on your own car if u still want it to run (no offence)

the first tool ull need is the workshop manual..... look around and it tells u step by step of how to do it....reason being wen u pull your head off your not just undoing a few bolts and bam..... ur pulling off your exhaust, ur intake, ur timing belt and about 70% of all the bolts on the engine.

and yes there is a certain way of undoing and retightening the bolts...

Stealthynsa Proficient

Stealthynsa

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lol if u havent pulled a engine apart before i would not be attempting it on your own car if u still want it to run (no offence)

the first tool ull need is the workshop manual..... look around and it tells u step by step of how to do it....reason being wen u pull your head off your not just undoing a few bolts and bam..... ur pulling off your exhaust, ur intake, ur timing belt and about 70% of all the bolts on the engine.

and yes there is a certain way of undoing and retightening the bolts...

i have never opened an engine but ive done...

suspsension

brakes

turbo installs

changed engines in my car

and more so im more then sure i can do it...?

Stealthynsa Proficient

Stealthynsa

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sorry if i offended u im not underminding ur mechanical ability just trying to look out for u thats all....

get your hands on a workshop manual tho.....or something will go wrong.

why are u taking it off in the first place?

nah its kool man,

to cut a long story short...

bottom of spark plug is in my engine cause had a misfire and found out was the plug so i took it out and bottom wasnt on it...

fixed problem and i can hear it in the engine jumping around.

so yeah cant drive untill its done

Stealthynsa Proficient

Stealthynsa

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Has it cracked a headgasket or been overheaten?

there is nothing wrong with the head never had trouble,

he just said when ever u take a alloy head off a car it always needs to be milled so yeah is he talking rubbish to get me scared and take it to him

MrStabby Grand Master

MrStabby

Posted
Posted

I'd be trying to get that bit out without pulling the head - have you exhausted all options?

Re: machining the head, on cast heads you can use a straight edge and feeler gauges to measure how out of straight it is. There should be spec in workshop manual about how much is ok without machining. I wouldnt imagine that alloy would be any different, but i'm sure the workshop manual will have the info.

blind_elk Grand Master

blind_elk

Posted
Posted
have you tried to fill the cylinder with oil @ BDC and turn the engine over by hand and hopefully the oil will push out the bottom of the plug?

Worth a shot instead of pulling the head off.

Piece of string or thin rope, coated in grease. Stuff it into the cylinder, bring the cylinder nearly tp TDC, the grease should pick up the broken bit of spark plug.

If you must pull the head, do a search for the torque specs and remove / install order.

Stealthynsa Proficient

Stealthynsa

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is it the steel part or the ceramic part? if its steel- I'd be getting a small magnet on a wire or rubbing a screw driver on a speaker magnet and then putting it down the spark plug hole. and hopefully u pick it up.

yeah ill try that tomorrow but the last time i started it to show someone i knew it wasnt bouncing around in there so im a bit worried its gone somewhere else cause u can slightly hear it sometimes

Cjmartz2k Proficient

Cjmartz2k

Posted
Posted
Piece of string or thin rope, coated in grease. Stuff it into the cylinder, bring the cylinder nearly tp TDC, the grease should pick up the broken bit of spark plug.

That's a damn good idea. Hopefully I'll never have to use it, but I'm going to throw that one in the old bag-o-tricks for sure. Nice tip :D

PM-R33 Grand Master

PM-R33

Posted
Posted (edited)

If you do decide to take the head off. then to do the job properly you will need:

Workshop manual (Most important thing, without it don't bother because you will need all the torque settings)

Harmonic ballancer puller

10mm allen key socket.

Full socket set and all your basic tools

Torque wrench

Razor blade (to get the old head gasket material off the block)

Headgasket (or just get a VRS kit and do all your seals and gaskets while your at it)

Deck the head

New head studs

Engine Oil

Coolant

If you haven't done your timing belt and idler do that at the same time.

That's all i can think of for the time being.

Edited by PM-R33
MBS206 Grand Master

MBS206

Posted
Posted

I have a copy of the workshop manual too, if you want a copy, PM me your email address.

It's an electronic form (PDF)

As to the plug tip, if you've started it since then, I'd actually be pulling the head.

There is a HIGHLY likely chance you've f**ked the bores, or a valve.

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