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Hawk STI - peace of mind?

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Old 13 August 2013, 08:21 PM
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oHUTCHYo
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Default Hawk STI - peace of mind?

I have my VXR Nurb for sale, previously I had a 2005 Blob STI. I fancy getting back in a Scoob but do prefer the front of the Hawks.

I've driven an RB320 and a 2006 STI PPP before but ultimately went for a blob due to the common advice on avoiding the 2.5 lump.

Question: If I did go for a Hawk, what would I need to have done and importantly at what cost, to have peace of mind the engine wont go bam. Its unlikely I would remap if it was PPP, even if I did I wouldnt go over 340BHP.

Reading the sticky on 2.5 issues it just seems nobody is safe! I cant imagine owning a Hawk and it feeling like a ticking time bomb.
Old 13 August 2013, 08:31 PM
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marshall332bhp
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Am no expert but I think you can have the head gasket and studs replaced and that solves it. One question. Why go for a PPP if you intend to remap it as it won't be a PPP anymore.
Old 13 August 2013, 08:41 PM
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cuprajake
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Yeah

Engine out.

Uprated hg and stronger head bolts

Others will tell you to throw forged pistons in there along with new bearings etc.
Old 13 August 2013, 08:47 PM
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Uhh, sounds big money!? Was hoping it might have just been a preventative £400 versus £3K+ rebuild if it did go.

Reference PPP vs map, my Blob STI was PPP and was good enough for me so would leave as is if PPP
Old 13 August 2013, 08:50 PM
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cuprajake
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Not really about £1000 for the hg and studs then another £1500 for the forging.

Or find one that's been done or has a warranty lol
Old 13 August 2013, 08:54 PM
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Originally Posted by cuprajake
Or find one that's been done or has a warranty lol
lol, this then or perhaps JDM.

Bet I end up in another 2005 Blob
Old 13 August 2013, 08:56 PM
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marshall332bhp
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[QUOTE=
Bet I end up in another 2005 Blob [/QUOTE]

I would buy a blob and change the front end if the hawk is the style you like.

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Old 13 August 2013, 09:33 PM
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moneys
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I've got a Hawkeye up for sale. Its the sti and has the all important upgraded head gasket and also the studs. Putting out a safe340 as well. Pulls like a train. Hawkeye's are awesome cars and as long as the work has been done then so is the 2.5 lump
Old 13 August 2013, 09:52 PM
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thenewgalaxy
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Boggo 2.5 a disgrace that Subaru could mass market and refuse to revise adequately an engine with known problems.

Forged 2.5 great engine.

Uprated HG and studs cure the HG problem but my Hawk engine also blew no.4 piston, a well-known failure. I personally would recommend uprating the pistons and bearings as a minimum also.

Nice forged example I noticed the other day

http://www.pistonheads.com/classifie...rx-sti/1593862
Old 13 August 2013, 09:58 PM
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Ticks all the boxes, good find! Just need to sell mine and I'm all over it

Moneys, get some pics up mate and I'll check yours out too.

Thanks guys
Old 13 August 2013, 10:02 PM
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moneys
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I've only got one PIC on my phone. I'm away at the moment but will have some up the weekend. Pm me your number and I'll send my PIC if you like. That's a PIC of the car an not me haha
Old 13 August 2013, 10:51 PM
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chopperman
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Originally Posted by thenewgalaxy
Boggo 2.5 a disgrace that Subaru could mass market and refuse to revise adequately an engine with known problems.

Forged 2.5 great engine.

Uprated HG and studs cure the HG problem but my Hawk engine also blew no.4 piston, a well-known failure. I personally would recommend uprating the pistons and bearings as a minimum also.

Nice forged example I noticed the other day

http://www.pistonheads.com/classifie...rx-sti/1593862
I agree except i would replace the head bolts for 11mm ARP or Cosworth studs. I think a lot of cars have HG issues due to the standard head bolts stretching under full boost.

To the OP. ARP studs, Cosworth stopper head gaskets and forged pistons fix this engine, unless your looking to go over 450 bhp. If so look for a 2 L.
Old 14 August 2013, 01:13 AM
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LuckyWelshchap
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Originally Posted by chopperman
I agree except i would replace the head bolts for 11mm ARP or Cosworth studs. I think a lot of cars have HG issues due to the standard head bolts stretching under full boost.

To the OP. ARP studs, Cosworth stopper head gaskets and forged pistons fix this engine, unless your looking to go over 450 bhp. If so look for a 2 L.
+1

Yep, from what I can see the extra money for a JDM Hawk is less than the safety net required for a UK.
Old 14 August 2013, 02:05 AM
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My blob will be going onsale this week.
Old 14 August 2013, 08:23 AM
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marshall332bhp
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You only just got it Steve what's happened
Old 14 August 2013, 10:19 AM
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Originally Posted by stevep360
My blob will be going onsale this week.
Look forward to seeing the ad mate
Old 14 August 2013, 10:59 AM
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Originally Posted by marshall332bhp
You only just got it Steve what's happened
need a bigger van for work so am gonna go t5 and can use it for work and play.
Old 14 August 2013, 11:21 AM
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If you're doing pistons, Cosworth stopper gasket, ARP head studs, you may as well at least get the liners pinned for a small extra cost!
If you want 450+ you'll need rods & advise getting CDB work.
There are EJ257's out there running easily 500-600bhp on this with appropriate ancillaries...turbo, 14mm head studs etc!!

Oh & regardless, you'll need a set of bearings!

All this starts circa £4k for 400/450bhp & just keeps getting more expensive the more power you want.......

Last edited by IggyRB320; 14 August 2013 at 11:25 AM.
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