sounds like you may have taken a ring land off, been there done that, adding a 6psi kit with a crappy Deltagate(boost spike crazy) to a dynamic compression 10:1 subaru kissed a ring land good by in under 1k miles.

 

Yea, I think it's hinting "spend some money on me, you tight Scots git" !! ....... Or was that Mark

 

 

Well, IIRC, you've had a very good run for the money you've already spend on the engine internals. Glad you have decided to open it up before it opens itself up.

Its going to be interesting to see how much more you will be able to get out of the engine after you've strengthened the internals a bit.

 

Good that you caught it now before it developed. Hope its nothing too major.

 

could be a broken valve?

still maynot be that expensive

the question is, when you open it up much are you going to replace? just the broken bits or are you going to rebuilt the whole engine.


sam

 

Replace? Why not duct tape?

Sorry to hear it Andy - it would be useful to identify what is failing (for the greater good, so to say ) before it goes big time.

Richard

 

Better get cracking Andy.

Well Lane 4's only a few weeks away ..or is that deffo out the window?

Alan

 

Depends on a mutual agreement between my bank manager and Mark Aigin I'm just a bystander now

 

I picked it up on the knocklink as 'lift off det' a few weeks back

they all do that-don't they?

 

My one never used too !!!

 

only greens or more?

sure my car has always flashed the greens on high rev lift off's.

group-buy from mark anyone!

 

Nah, think you're ok I can get it climbing right up the tree on light load but quiet at full boost. Remember at Knockhill we thought it was the turbo discharge pipe rattling that was causing it.

 

Andy,

I'm terribly sorry, if it turns out to be terminal. You know my feelings from my email.

Joking aside, these are not the circumstances which I want to get business from. I'd far rather people "chose" the time they want to up grade.

I hope it turns out to be something cheap, and easy to repair. I'm also looking to limit the competition

Mark.

 

like i said... let me know if i can do anything to help or if you need anything sourcing... mark will vouch for my contacts

David

 

Hi Andy,

Sounds exctly like the symptoms I had pre the "big BANG".
We did a compression test just before big red clocked out and found that no3 was 60 psi down. All cyls were around the 150 mark except no3 which was approx 90 psi. Now as you know after knockhill she died Maybe worth doin the check m8.
BTW haven`t split the block yet 2 c the damage but the symptoms sound 2 similar bud. Lemme know how u get on

Pete

 

sorry to hear that andy, but definitely looking forward to seeing what you'll do next.

 

Good stuff Andy,

Glad 2 hear it`s not gonna be a bad un 2 fix
Hmmm.. might even crack my old 1 open for a butchers, wot with the symptoms sounding so similar. After having a full read of the thread can`t believe how similar "thought it was the turbo discharge pipe rattling" Uncanny how parallel our thinkin was there mate. And a spare engine would be nice
Lookin 4 ward 2 seeing ur`s fixed up 4 the new season, so c`mon bud, get her sorted. It wouldn`t be the same without some real competition.

BTW u got a list of the torque settings for the engine ?
If u do any chance of a copy ?

L8r m8
Pete

[Edited by teknopete - 12/26/2002 11:20:28 PM]

 

Mark has some Sti 4 pistons

or I have an Sti 5 short engine

Solid lifter heads are indeed a bonus, any measurement of the diameter? Cam lift would be interesting too.

Paul

 

Although there is no visible signs of det on the pistons, surely this is what caused the broken piston???
Solid lifters?? wouldnt that be expected in an RA. The 93 RA my mate had over 4 years ago ( albeit for only 4 days ) had a rev limit of 8000rpm...went bloody well too for a completley std car.
The rings do seem to be made of strong stuff.. Ive seen pistons totally melted around the rings, and they still havent broken

 

Glad to hear the internals have survived otherwise. Would be interesting to hear how much the pistons weigh compared to a Phase II UK car if you could weigh one. I'm sure someone would know the weight of a UK piston.

 

I think the phase 2 cast pistons are like the Sti pistons size and shape wise, but the Sti ones are definitely different.

I suspect the late pistons are lighter than the early ones, but not as strong.

Interestingly, I wonder if the std phase 2 pistons are close enough to the weight of the Sti ones, that the conrod loadings are the same?

Paul

 

Andy,

If you have solid lifters, the heads aren't original. Are you sure that they aren't hydraulic ? Do the buckets/followers have a groove around them, and about 28mm in dia'.

Mark.

 

There is just a little top hat shim between the valve and the follower. I'll go have another look, I don't recall a groove
Is it standard for the cam bearing caps to be etched with their locations ?

 

Andy,

If you have shims, then they are solid lifter.

If they are "top hat" shims, as against small discs, then they have definately been played with, maybe converted at some point ?

Subaru only started making solid lifter heads in '97, so it looks like your engine's been apart at some point.

Mark.

 

I dont know for a fact, one way or the other, but given the higher rpm of the RA, wouldnt solid lifters be expected???

Also look at this link
http://www5a.biglobe.ne.jp/~miner/Impreza/misc_dataeg.html
copy and past it into here to translate the website
web translator thingy

I does seem to say that RA's do have solid lifters, with lesser models having Hydraulic Lash adjustment from what i gather from the translation. The coil on plug direct ignition would suggest it is an early model, as would the TD05H turbo, whcih also appears to be slightly larger for the RA and post 94 models.
Make interesting reading??


[Edited by ustolemyname??stevieturbo - 12/27/2002 2:02:41 PM]

 

Right, Followers are 30mm diameter, 23mm long (very light)
The top hat type shims have a marking (size?) such as 32 or 25.
The heads are early bolt on coil type.
Cams are marked R3IN R3EX L3IN L3EX. Also M9 cast in to shaft.
Pistons (ART) weigh 490gms pin 145gms.

Does that help ?

 

How about some pics too Andy ??
The cam carriers are usually engraved with locations, and the cams are also marked as you locations.
Not sure what the 3 refers to, or the M9

 

Mark,

can you say which MY cars have metal cam pulleys?

I noticed andy's are plastic but always thought the early cars were metal.

 

Didnt think the plastic was til after 96ish??