My BH5 GTB 2.5 conversion

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My BH5 GTB 2.5 conversion

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by Scoobycity on 06-04-08 10:31 PM

Hi guys, DannyBoy here. I'm normally found over on www.Scoobycity.co.uk in the UK where I'm the chairman.

Anyway, I've just picked up this 99 Legacy GTB for my next project and needed a bit of help and advice from the tech forum here. Thought you might like to see before the work starts.

Its got a blown engine so its the perfect excuse for a decent power build. http://www.uklegacy.com/forums/style_emoticons/default/biggrin.gif
http://www.scoobycity.co.uk/phpBB2/files/200803170942_129.jpg
http://www.scoobycity.co.uk/phpBB2/files/200803170933_108.jpg
http://www.scoobycity.co.uk/phpBB2/files/200803170934_113.jpg
http://www.scoobycity.co.uk/phpBB2/files/200803170934_111.jpg

And here's the new EJ257 short motor just picked up and ready to go in.

http://www.scoobycity.co.uk/phpBB2/files/200803231544_148_r.jpg

I'm keeping the standard turbo setup to start with just to see what I can get out of it. Then when I get board probably a single big one.
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Re: My BH5 GTB 2.5 conversion

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by CRUISN on 06-04-08 10:37 PM

Welcome to OzLiberty. big_smile

Nice wagon.

Good luck with the build.
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Re: My BH5 GTB 2.5 conversion

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by zerott on 07-04-08 12:02 AM

damnn hottt!
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Cheers,
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Re: My BH5 GTB 2.5 conversion

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by Stig282 on 07-04-08 04:04 AM

That looks great Dannyboy.
There's some great driving to be had on the country roads around you is there not?!

So what was the advice you were wanting?
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Re: My BH5 GTB 2.5 conversion

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by Scoobycity on 07-04-08 04:42 AM

Thanks guys,

The "help and advice" I referred to was mainly answered using the search button. All I really needed to know is what the standard turbos were like (and capable of) and wether the heads had any differences I needed to know about when mateing to the 2.5.

As for the roads over here.....

http://www.youtube.com/v/oogHxb1sv8Q
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Re: My BH5 GTB 2.5 conversion

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by fatcat67 on 07-04-08 11:49 AM

If you keep the same sequential setup you'll run out of puff real early, but it will be a torque monster.
Even on my 2.5 the VF39 is too small for any real topend but down low it is like a V8. Even a tad too much to drive around town at peak hours.
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Re: My BH5 GTB 2.5 conversion

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by Stig282 on 07-04-08 12:58 PM

Scoobycity;124644 wrote:

Thanks guys,

The "help and advice" I referred to was mainly answered using the search button. All I really needed to know is what the standard turbos were like (and capable of) and wether the heads had any differences I needed to know about when mateing to the 2.5.

As for the roads over here.....

http://www.youtube.com/v/oogHxb1sv8Q
Excellent, someone who knows how to use the search function!

As for the vid, those roads aren't in Norfolk, that's for sure!!!! Was it the Lakes? Or Wales?
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Re: My BH5 GTB 2.5 conversion

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by Scoobycity on 07-04-08 03:56 PM

fatcat67;124669 wrote:

If you keep the same sequential setup you'll run out of puff real early, but it will be a torque monster.
Even on my 2.5 the VF39 is too small for any real topend but down low it is like a V8. Even a tad too much to drive around town at peak hours.
Thanks for your opinion, good to hear from someone that has done the same thing already. Did you run the EJ257 with the standard setup first or go straight for the VF39?

I'm really just experimenting at this stage. I've never even driven the car as I got it with the blown engine so really just want to get it back on the road as cheaply as possible first to make sure I like it. Granted the EJ257 is not the cheapest option but it gives me the option of taking things further if I decide to keep it.
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Re: My BH5 GTB 2.5 conversion

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by Scoobycity on 07-04-08 04:04 PM

Stig282;124683 wrote:

Excellent, someone who knows how to use the search function!

As for the vid, those roads aren't in Norfolk, that's for sure!!!! Was it the Lakes? Or Wales?
Sorry I thought you were refering to UK roads in general. Didn't realise you had local knowledge.

Norfolk does have its countryside with plenty of empty twisty roads but its very flat round here and get boring very quickly. Its also tractor land so we often get stuck behind one :angry:

That was taken in Yorkshire in an area called the Lake District.

What are the roads like over there? Hope you have some twisties as we're considering emigrating to Oz one day.
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Re: My BH5 GTB 2.5 conversion

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by retz_fozza on 07-04-08 04:13 PM

welcome.. thats fat as mate, good luck with building it up. tough lookin wagon definately....
cheers, retz
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Re: My BH5 GTB 2.5 conversion

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by fatcat67 on 07-04-08 09:18 PM

Scoobycity;124711 wrote:

Thanks for your opinion, good to hear from someone that has done the same thing already. Did you run the EJ257 with the standard setup first or go straight for the VF39?

I'm really just experimenting at this stage. I've never even driven the car as I got it with the blown engine so really just want to get it back on the road as cheaply as possible first to make sure I like it. Granted the EJ257 is not the cheapest option but it gives me the option of taking things further if I decide to keep it.
In all honesty I would recommend a single turbo conversion with that configuration.
Mine is a 2005 USDM STI conversion with forged internals. Not cheap, but it's run faultlessly and offered pretty good fun.
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Re: My BH5 GTB 2.5 conversion

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by Subarujunkie on 07-04-08 09:27 PM

nice car like the colour and the grill as its same as mine but mine is a sedan....

http://www.ozliberty.com/forums/showthr … t=8790that was my car

enjoy the forum
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Re: My BH5 GTB 2.5 conversion

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by djb on 08-04-08 09:51 PM

Hi Mate,
Nice car.  It's what I'm converting my car to.  Starting with a Gen3 Heritage Wagon and going to GTB.  What year is your Car.

I can pick yours is a Gen3 shell, but the interior looks to me like it's a Gen2 as it looks nothing like mine.

KDogg (spelling?) on here has done exactly what you're talking about but to a sedan.  He's dropped in an EJ257 into a B4 sedan.  He got the ECU reflashed with ECUTEK and it seems to be running well.  If you have a look at what KDogg's done, it might give you some ideas.

Cheers
Darryl
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Re: My BH5 GTB 2.5 conversion

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by fatcat67 on 08-04-08 11:22 PM

djb;125028 wrote:

Hi Mate,
Nice car.  It's what I'm converting my car to.  Starting with a Gen3 Heritage Wagon and going to GTB.  What year is your Car.
I can pick yours is a Gen3 shell, but the interior looks to me like it's a Gen2 as it looks nothing like mine.
KDogg (spelling?) on here has done exactly what you're talking about but to a sedan.  He's dropped in an EJ257 into a B4 sedan.  He got the ECU reflashed with ECUTEK and it seems to be running well.  If you have a look at what KDogg's done, it might give you some ideas.
Cheers
Darryl
The interior picture is of his Imprezza.
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Re: My BH5 GTB 2.5 conversion

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by Scoobycity on 09-04-08 03:24 AM

Yes quite right. The interior shot is when I picked the new short motor up in my Impreza...

http://www.scoobycity.co.uk/albums/album144/sany0005_620.jpg
http://www.scoobycity.co.uk/phpBB2/files/200803231544_148_r.jpg
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by Scoobycity on 09-04-08 03:40 AM

fatcat67;124781 wrote:

In all honesty I would recommend a single turbo conversion with that configuration.
Mine is a 2005 USDM STI conversion with forged internals. Not cheap, but it's run faultlessly and offered pretty good fun.
Everyone I speak to keeps telling me the same thing but I really don't want to spend too much just yet until I'm sure I like the car.

If I do like the car and decide to keep it I'll start collecting bits (turbo, injectors, pump, fmic etc) then slap them all on in one hit.

Cheers djb - I'll search Kdogs posts.
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Re: My BH5 GTB 2.5 conversion

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by Stig282 on 09-04-08 04:19 AM

Scoobycity;125060 wrote:


http://www.scoobycity.co.uk/albums/album144/sany0005_620.jpg
I like the matching caravan!
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Re: My BH5 GTB 2.5 conversion

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by XoN on 09-04-08 08:24 AM

With a WRX like that, why do you need a wagon :no2:

Tis a very nice wagon though, for a Gen3 big_smile Welcome to the forums.
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Re: My BH5 GTB 2.5 conversion

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by nic9191 on 09-04-08 08:49 AM

both very nice cars, love the impreza

i wanna get a grill like the one on the wagon
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Re: My BH5 GTB 2.5 conversion

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by Scoobycity on 13-04-08 09:42 AM

Started stripping the old engine down today.

Not a pretty site :no:

http://www.scoobycity.co.uk/phpBB2/files/y1psnrzlijanvnrlfluobsyjimhfshtefvgzljlwjvirqmsg4lrfiineq61hwaeaeazdnvqu_w0a2m.jpg

http://www.scoobycity.co.uk/phpBB2/files/y1psnrzlijanvojzdxvshtwsusfyvyrkmiedxza72r-iy1-crqljzbyv2wxxdmv_pr6m5pceniuhwa.jpg

http://www.scoobycity.co.uk/phpBB2/files/y1psnrzlijanvp-9c43hcgvm1rdqcnqchtd3jroruw_whlmpavphiznb7ftjib-qpgfzyc1hlyhk5q.jpg
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Re: My BH5 GTB 2.5 conversion

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by fatcat67 on 13-04-08 02:35 PM

OH SH!T.
Thats buggered.
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Re: My BH5 GTB 2.5 conversion

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by CRUISN on 13-04-08 03:22 PM

fatcat67;125886 wrote:

OH SH!T.
Thats buggered.
Nah thats an easy fixer.

:no:

big_smile
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by Subarujunkie on 13-04-08 05:21 PM

wow thats going to be fun times.........but keep up the pix and lots of beer time and sweat coming your way....
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by binary on 13-04-08 07:39 PM

Nice wagon! Will be keen to see the finished product smile
Thinking of doing a very similar conversion myself. Keep us posted with info and pics!

Welcome to the forum.
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Re: My BH5 GTB 2.5 conversion

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by djb on 13-04-08 07:52 PM

Scoobycity;125822 wrote:

Started stripping the old engine down today.

Not a pretty site :no:

http://www.scoobycity.co.uk/phpBB2/files/y1psnrzlijanvnrlfluobsyjimhfshtefvgzljlwjvirqmsg4lrfiineq61hwaeaeazdnvqu_w0a2m.jpg

http://www.scoobycity.co.uk/phpBB2/files/y1psnrzlijanvojzdxvshtwsusfyvyrkmiedxza72r-iy1-crqljzbyv2wxxdmv_pr6m5pceniuhwa.jpg

http://www.scoobycity.co.uk/phpBB2/files/y1psnrzlijanvp-9c43hcgvm1rdqcnqchtd3jroruw_whlmpavphiznb7ftjib-qpgfzyc1hlyhk5q.jpg
Cos those holes are supposed to be there, NOT!!!

GL with it all.  Why not pull the engine out and put the block on an engine stand and strip it on that?

Cheers
Darryl
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