taylormade89

well crank is knocking so where do i start to rebuild?
i dont know how far to go with it

i could just sent the block away and get a reground and new bearings, head gaskets and timing belt job done

OR

i could go for rebore and horn, new pistons and rods, reground crank and acl bearings
timing belt, oil and water pump, all new seals and gaskets, ARp head bolts, cluch

what would you go for?
iv got it very early so the heads should be ok?

360ste

iTrader: (1)

Don't get the crank reground. There are posts on detailing the full reasons why you should not.

taylormade89

why should i not get it reground? should i get a new one?

joz8968

iTrader: (13)

New crank - no regrinds!!!

Do you have an upper budget limit? Prob best to know this first, then work back from there for your best route, for your money...

joz8968

iTrader: (13)

The Subaru crank has a specially hardened sufarce to it (nitrided?) and any regrind will get rid of most, or all!, of it. Prob won't last long soon after you get rebuild done!

Do a search for "crank regrind", or similar, and you should turn up many threads. Especially note any contributions from a specialist called API David. He usually goes into great detail why it SHOULDN'T be practiced...

taylormade89

dont really have a budget what ever it costs is what il need to spend
new crank, an i aswell getting new rods and pistons aswell?

could i buy a brand new bottom end or engine from subaru?

wayno

iTrader: (3)

I thought it was only the later cranks that are nitrided?

taylormade89

might aswell add that the car is a 2000plate classic wrx if that make a diffrence

joz8968

iTrader: (13)

Yes, get a new one!

Or at least ring API David and see if he has any reusable ones that have been pulled from customers motors (who have gone for a fully forged rebuild) etc.

joz8968

iTrader: (13)

Yeah, you're probably right.

But hardened surface or not, the crank should NOT be reground, regardless.

TonyBurns

iTrader: (3)

Its best to upgrade to a twin scroll crank with the better oil feed to the bearings (drilled/nitrided unlike the other ones).

Tony

taylormade89

where can i get one of them?

joz8968

iTrader: (13)

Your best course of action would prob be to find a fully forged (with decent forged rod/pistons) bottom end and get it strapped onto your existing heads, ancillaries, etc.

Andy Williams of Williams Motorsport (WMS) often is selling engines - he goes rallying and is a pukka Impreza specialist/tuner/mechanic too, I believe. I think he's currently got a couple of long engines (with heads) on eBay at the moment. If the heads are ph.1/1.5 MY93-98, then you'd need to reuse your ph.2 heads anyway, as your inlet manifold (with all your existing ancilliaries) won't bolt on. If so, that'd be a shame as yours aren't the better STi ones anyway...

taylormade89

are the ones on ebay fully forged?

taylormade89

Subaru Engine block on eBay (end time 06-Feb-10 15:42:56 GMT)

what about this?

joz8968

iTrader: (13)

One certainly was! It as an ex rally engine I belive that had only seen a few hundred running in miles or something. It had been built to take around 500bhp! - so obvioulsy had pukka internals in. Thing is, I haven't looked lately, so don't know if it's still available/sold...

taylormade89

had a look but couldnt see it must be sold

Noris8322

iTrader: (1)

If you deside on a crank, this is a genuine item complete with an ACL Bearings set

Subaru New Nitrided CrankShaft EJ20 & ACL Race Bearings on eBay (end time 25-Feb-10 11:49:19 GMT)


Hope this helps

taylormade89

yeah seen that cheers

how can i tell if i have an end thrust or a middle?

Noris8322

iTrader: (1)

I would leave this alone, its got a reground crank

Noris8322

iTrader: (1)

I dont think there is anyway of telling untill you get it apart

taylormade89

well spoted i never seen that it said new crank cheers for that

joz8968

iTrader: (13)

Not at all. You have to carefully read any listing. TBH if you were going to buy a third party short or full engine (rather than getting yours rebuilt), I'd only buy one from a reputable specialist, such as WMS, for example.

If any doubt whatsover over what you'd be buying, then, instead, I'd simply get yours rebuilt properly by briefing a well known specilaist and leaving it their safe hands...

Noris8322

iTrader: (1)

TBH I would speak to David @ API. The guys @ API done a fantastic job of rebuilding my engine, you will also get honest & professional advice

Check out their web site

API Engines

taylormade89

think the best bet would be to get new crank with bearings (£510), some new rods (£280) and a set of forged pistons (£400 ish) and put my heads back on,
new oil and water pumps, head gaskets and timing belt kit then back in the car

sound about right?

taylormade89

how much would an engine from them cost couldnt see a price on there website

joz8968

iTrader: (13)

Agree with Norris re API - it won't be cheap (certainly of you go proper fully forged!!) but it will be done right first time.

API give no strings advice...

Your best course of action is to ring (or email if can't get through). I guarantee you'll feel a whole bunch better about your situation after you've opened dialogue with David. Very helpful, knowledgable and friendly...

Noris8322

iTrader: (1)

I think you would have to give David a call to get prices, either that or drop him an email.
David's email address is on the "contact us" section on the web site. Also I forgot to mention everyone of their engines comes with a modified oil pump as standard

If you want others opinions on them, just put API in the search engine at the top of the page

joz8968

iTrader: (13)

taylormade89, here's that WMS fully forged, 500bhp-potential, motor I was on about!:-

Impreza sti wrx ej20 forged rally car engine low use on eBay (end time 14-Feb-10 19:57:17 GMT)

MK2VTR8VALVE

Subaru Impreza V9 Crankshaft ACL Competition Bearings on eBay (end time 12-Feb-10 10:04:01 GMT)

Good deal there-I bought it myself a while ago. Very good to deal with.