Tlag

My build/conversion project

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I feel like a magpie strangely attracted toward all that shine :) Top job and love the amount of pictures :)

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Today started with work underneath

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So, first job is to install the baffle plate and oil pick up

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Next was to cover it up again :)

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With the bottom done as much as I need at the moment, attentions turned to the heads.

The Arp head studs first

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Head gaskets fitted

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And heads put one and torqued up

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Then, I couldn't wait any longer, so I had to mock up the exhaust manifold :)

It will have to come off again but I couldn't help myself.

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~Very nice looking more like an engine again now mate. I do love seeing that Cosworth symbol :D 

And I have to say amazing how much you have cracked on with it already :) 

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It is amazing how quickly it is coming together - big boys lego ;)

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The build has slowed a little but is still progressing.

Have now fitted the buckets/shims and camshafts.

Finally fitted the cam covers with new gaskets and started building the front covers up

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Slowed down for now I'm sure will soon be lot's to do again all in one go :) 

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best thing about your own projects they can go at the pace you want not being dictated to by someone elses agenda

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as most of the hard work is behind you now bud ;-)

 

I wonder how many times I said that to myself for it to be worse  :lol:

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Managed to get a few hours in today on the beast. Had a good morning. I got he timing belt on along with the cam covers, hotter spark plugs fitted for the extra power and drilled and taped the cam covers to install the new breathers. Shouldn't be too much longer now!

Famous last words. :)

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Was gonna ask if you had any updates , but, know what it's like when you have more work than week and the project takes a back seat .

that's a nice stage to be at tlag :-)

Whats the extra /new breathers for fella ?

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As it's a 2.5 block, it has the extra un baffled crankcase breather. The heads are 2.0l heads and so only have the standard, single, baffled breathers. I've fitted the extra breather ports so they can simply link up with the crank case breather, which means that any pressure is evened out.

I could have just capped the extra breather, but I know the 2.5 breaths quite heavily, so it's more 'belt and braces' than anything else.

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Whoop-whoop like savage I was wondering when the next update was coming :D 

So went for drilling it then :) I guess no other way really. And looking more like a built engine now fingers crossed be ready to see it now the roads are getting dry :)

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I don't know to much about the 2.5 bottom ends tbo 

 

I was just curious because the only place I get a slight weep of oil (after a bit of lead foot)  on my engine is the gasket between the plastic crank case and the cam cover .

 

are you using impreza heads or legacy ?

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is there any legacy heads to look out for ?

 

like the impreza   v2 to v4 sti comes with shims under buckets and the v3/v4 sti's  have slightly more aggressive cams than other classics

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These are gen 2 GTB heads. Shims over buckets. Tbh, no other reason to use them than I already had a set. If I'd used Impreza heads, I would have had less work to do due to the secondary turbo oil feeds.

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do the phases change on the same years like imprezas  phase 1 93 to 96 ,phase 1.5 97 to 98 and phase 2 99 onwards

 

just curious as to whether the inlet stud pattern differs ;)

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The inlet manifold stud pattern is different on Legacies too. Gen 2 legacy is the same as phase 1. gen 3 is the same as phase 2 I think.

The inlet manifold has been the biggest headache up to now with my conversion. Using Gen 2 heads, I've had to use either a very early Impreza manifold (which I didn't have) or a gen 2 manifold (of which I have a few). Plus, the manifold electric loom needs to obviously fit the components on the block, heads and at either end, so that has to be the legacy loom. The idle control electrics are different on a legacy to an Impreza, as is the throttle control, so that narrowed it down to a legacy manifold.

I've also gone for a parallel fuel rail conversion and a side feed to top feed conversion. This has meant altering the injector plugs, as side feed ones don't fit top feed injectors.

Going single turbo, the turbo air inlet had to be from an Impreza, which means I have more spare vacuum and air vents than you can shake a stick at. Lots of capping required :).

Hopefully, I'm reaching the end of the manifold headache, but it's not quite done yet. :)

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I've got 2 spare v3/v4 phase 1.5 inlets and my old v3 uk turbo long block. so let me know if you need any bungs outta the oil feeds on the impreza heads or any dimensions of the inlet/sensors ;-)

parallel fuel rails that's something on my to do list but, my 550 cc side feed nismo's were running 450hp @ standard fuel pressure ( in a race car previously ) so they'll be ample for my needs

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It's quite worrying really. When I first started the project, I made a list of bits required and ticked the bits off when I had them.

What's worrying is, every time I move on to the next section of the build, I have to add to the list. Although in general, the size of the parts has got smaller, the size of the list never seems to. :)

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Got the equal length headers on to today.

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Whilst I was looking at the bottom of the engine, I started on the sandwich plate for the oil cooler. I found the oil sensor I have to install in it is quite long and just wouldn't quite fit. So, out with the Dremel and a bit of material removed. It then fitted just right. :)

Next was the engine mounts and turn the engine the right way up again. I turned my attention back to the inlet manifold, which it keep, finding excuses to walk away from. Converting it to single turbo has been a bit of a mission. Whilst I know the twin turbo setup very well indeed, the single turbo setup, which should be simpler, I have very little knowledge of.

Anyway, I think I have the manifold just about worked out now so I put it all together. I still need to actually fit the wiring loom but the air pipes are now fitted along with the top feed injector conversion. Next will be the parallel fuel conversion.

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Shocked you went with equal length headers and lose the burble. But does look very nice in all it's mirror glory. I will ask might sound dumb does the equal manifold increase the BHP  or is it a matter of what you like more in the sound. ?

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It's unfortunate that I will lose the burble as I love it. Still, I have a twin turbo with an awesome noise for that if needed.

I've gone this route just to get the most from the mods and conversions that I've done. I really can't put a figure on bhp that I could gain from this but everyone I've spoken to recommends it.

Maybe I could do what they do with the new Mclaren, just play the exhaust noise through the stereo.:)

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It is a shame but can see where the logic comes from while it would be better. Would like to know for sure if I was doing it myself just to try keep that part of the sound. I do agree though I'm sure the noise from this beast would satisfy little old Edna as it went past whilst she waits at the bus stop. :wacko:  

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