| Author | Topic |
|---|
Location:
A.C.T
Registered:
July 2002
|
 All the "experienced" engine rebuilders please read and HELP!
|
Thu, 29 April 2004 03:51
|
 |
Ok, just finished pulling the head off my 5ME-powered Cressida and at the same time re-confirmed my love for Rotaries and their three moving parts lol!  Anyways, heads getting pressure tested and re-conditioned and what not and will be back tomorrow, however i'm starting to worry because it has to be running by Saturday and it's taken me about a whole day to remove the bloody intake manifold gasket!!!! Had extractors fitted a month ago so that side came off brand spankers almost, but the intake manifold gasket is just caked-on soo bad i'm starting to worry i won't have it all off in time and it will leak once it's all back together! I know you're probably all laughing but seriously, i'm killing my back leaning into the engine bay with a razorblade and bottle of metho and all i'm acheiving is damn shavings! Can't use the chizzle cause i cant get behind the gasket it's too baked and i dont want2 chip the bloody thing and cause more troubles than good.
I cracked out my dads air die grinder but decided that was too sketchy, was taking little small nicks out and put it away very quickly. Metal wire brush? Useless. And here's the thing, normally i would take it somewhere to be chemically done or whatever they do but there's just soo much crap on the intake, all the anti-pollution gear and what-not, that i've left the manifold in the car still hooked up to all of it. I really dont want to remove it all, it'll take too long and i know i'll put it back together and have half the stuff left over. can ANYONE help!!!
cheers, André
p.s Never pulled a six cyclinder piston apart b4, any pointers at putting it back together. dont worry i marked the cam and everything, just any special things to clean or whatever with the 5mE? hmmm, maybe i should just drop a 20B in there....  .....  ) cheers
[Updated on: Thu, 29 April 2004 03:56]
|
|
|
I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Thu, 29 April 2004 04:58
|
|
There is a commercial product called gasket stripper. You spray it on, leave it for a while then strip it off. Repeat as required.
Like any engine, just make sure the block and head mating surfaces are spotless. Retorque the head at 1000 km.
|
|
|
Location:
A.C.T
Registered:
July 2002
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Thu, 29 April 2004 06:02
|
|
Thanks for that, good to see someones interested in helping fellow toymodders...(yeah i'm talking to you other 50or so people who looked then left with no help whatsoever!) lol I just spoke to a friend who also suggested that stripper and also said if i dont have any(which i dont) i could use carby cleaner. He also said take off the big bits with the razor then try using the die grinder again but with this other fitting he gave me, says it works a treat everytime. Anyway's thanks for that advice mr gianttomato-Crown, greatly appreaciated. 
André
|
|
|
I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Thu, 29 April 2004 06:10
|
|
Paint stripper also works. The secret is apply liberally and let it react good and proper with the paper.
I have to be honest I had little success with carby cleaner.
|
|
|
Club Member
Location:
sydney
Registered:
May 2002
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Thu, 29 April 2004 06:18
|
|
|
block all the intake ports with a rag or similar, get a wire brush with a drill fitting on the end ( superslut have them for about $6 a packet of 5 ) throw it on the die grinder or drill and play gently, makes a big mess but will be done in about 10 mins dont push too hard on the alloy, it wont really damage it but it may leave light lines, ive never had a leak on any ive had though. good luck
|
|
|
Location:
Newcastle
Registered:
April 2003
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Thu, 29 April 2004 06:55
|
|
What they said about the manifold gasket.
I also loke to use some sort of sealer on the new gasket so you will not get any leaks if the manifold or head is slighty marked from cleaning.Something like ultra blue (or grey) is good dtuff to use.
Apart from that just the usuall stuff like making sure the block and head surfaces are ultra clean as well as the head stud holes.
Probably a good idea to wipe the head and block with a rag soaked in some thinners to get the last of the grime off before putting the new HG on.
Apart from that just make sure the tensioner goes all the wak over when fitting so the chain won't be noisey.
Oh and probably back of the adjusters on all the rockers till you have the chain fitted and tensioned and timed correctly so that the valves can't hit the pistons if you need to turn the cam without the chain on.
There's probaly more but i hope some of this helps,although you probably knew all this anyway.
|
|
|
Location:
Mentone
Registered:
May 2002
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Thu, 29 April 2004 07:49
|
|
Dont be lasy and use rotary strippers. Wire or the scotchbrite type on your gasket surfaces. They can dig into the water and oil galleries and make them bigger than the gasket holes. Ive seen a few alloy heads that have been stripped with then need to be welded and redrilled,
Use a bit of elbo grease and a scraper.
Brad
|
|
|
Location:
Brisbane
Registered:
February 2003
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Thu, 29 April 2004 10:28
|
|
|
and if you get the gasket gunk soft enuf, use a plastic paint scrapper (available frm any large hardware store) - instead of aluminium/steel - takes longer but is safer
|
|
|
Location:
A.C.T
Registered:
July 2002
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Thu, 29 April 2004 15:47
|
|
Thanks for all your help guys, it was all really useful. Yeah gianttomato i tried the carby cleaner with similar results to yours, it softened it a bit but not much. It's all(98%)off now though thanks to the use of the suggested means and also some really fine sandpaper. Did i mention a good dose of RSI (or do they call it something else these days?) Anyways, thanks for everything and glad to hear some more helpful suggestions!
cheers André
p.s Mr M.J.H, is that your super seven replica, and if so what brand is it? I can recall asking someone this already a few years back, not sure if it was you or not. Just curious, my dad ownes the first PRB Clubman ever built so was just natuarlly interested when i saw another 7replica pop up. Also thanks for the re-building tips, not all of which i new!
|
|
|
Location:
South Australia
Registered:
July 2002
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Fri, 30 April 2004 01:52
|
|
|
Definitely clean up the head/block mating surface very thoroughly, this will extend the life of the head gasket by *alot*. Using some kind of acetone or alcohol spirits is good as long as it is designed to evaporate! (Don't use nail-polish remover, pure acetone is better)
|
|
|
Location:
warrnambool VIC
Registered:
April 2004
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Fri, 30 April 2004 08:13
|
|
|
If its really tough gasket material,try using an air drill with a WURTH rotary finger disc ,These are a small geen plastic fingered disc and wont damage the surface unless you go mad with it for ages.They use these at work and they save heaps of time.not real cheap though.
|
|
|
Location:
Newcastle
Registered:
April 2003
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Fri, 30 April 2004 11:47
|
|
| [TOYROTA |
wrote on Fri, 30 April 2004 01:47]
p.s Mr M.J.H, is that your super seven replica, and if so what brand is it?
|
It's based on the locost book and cost a whole lot more than 250 pounds.Dad and me built it in the shed at his place and hit the track only 12 months ago.
If your dad owns the first one PRB built does that mean the rego is PRB001?
Glad some of the tips are a help.
|
|
|
I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Fri, 30 April 2004 22:52
|
|
i'm with gianttomato on this, that spray on gasket stripper works wonders.
be quite careful using a wire wheel on a drill/die grinder, as the alloy is soft you can actually end up with undulation in the surface which may cause you further headaches - a small piece of emery and/or 80 grit paper will clean up the face (use lightly though) when the gasket stripper has done its work.
some stainless steel wool (scourer) will also help remove the gasket with the gasket stripper too. use gloves too.
|
|
|
Registered:
August 2002
|
|
Re: All the "experienced" engine rebuilders please read and HELP!
|
Sat, 01 May 2004 05:33
|
|
surely, with your wealth of rotary experience, you've come across a tough old gasket before???
don't rotaries have gaskets?? i wouldn't know as i wouldn't touch one. not my bag... but curious.
|
|
|
Location:
A.C.T
Registered:
July 2002
|
|
|
i had some on my old datto 1600 i said he could have, [WEB-45S] => (45mm webbers) but he said that was stupid and refused them lol.