GTV V6 (ph1) project (turbo) thread - Alfa Romeo Forum
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Tuning & Upgrades Discuss performance enhancements for your Alfa Romeo

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(Post Link) post #1 of 17 Old 29-04-18 Thread Starter
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GTV V6 (ph1) project (turbo) thread

Hi all.

Having owned a 156 2.4 20v for a couple of years I test drove a couple of ph2 GTV's then, finally, back in May 2017 I finally took the plunge and got myself this phase 1 V6
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File Type: jpg GTV V6 3.0 24v Lusso R.jpg (25.3 KB, 14 views)
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(Post Link) post #2 of 17 Old 29-04-18 Thread Starter
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Then, 3.5 days after buying it, a 7.5 tonne truck driven by a c0ck reversed into me while (safely) parked outside a business...

His insurance paid out 2.5k (which tells you something about the value of these cars!).
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File Type: jpg Car damage 01.JPG (23.9 KB, 16 views)
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(Post Link) post #3 of 17 Old 29-04-18 Thread Starter
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Fast forward to 2018 and I have finally started to work on it...

First was the 'seat mod', I removed the spacers and cut back the seat foam slightly (I'm over 6' tall), SUCH a good mod, feels like you are 'in' rather than sat on the roof!!

The only picture I took was the seat foam cutting in progress:
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(Post Link) post #4 of 17 Old 29-04-18 Thread Starter
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Then yesterday we found a spare half hour and chucked it on the dyno:

For reference, the only deviation from utterly standard is the intake is a straight pipe instead of the Alfa resonator system - the rest is completely stock
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(Post Link) post #5 of 17 Old 29-04-18 Thread Starter
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Finally (for now), today I popped it on the corner weight gauges, it's a bit of a fatty

Oh, and I tried my air con delete auxiliary belt out on a spare V6.. Well what do you know, it fits!!
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(Post Link) post #6 of 17 Old 09-05-18 Thread Starter
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Did a bit more on the project car over the bank holiday.

For some time now I've been thinking the best way to get air into the engine is through the little grill in the front of the bonnet, so, with this in mind, I purchased a lower rad (and a "pusher" fan) to try.

The AC rad was literally falling to bits and the water rad was not much better!

I haven't put any ducting in place, preferring to see how it runs 'as is' and have been very pleasantly surprised by the complete lack of any temperature drama's, if anything, it's running a little cooler since fitting the new rad - the new one is an all alloy unit, and thicker than the Alfa part (though approx 100mm lower).

The fan works perfectly with the stock Alfa fan supply, switching in and out in the normal way.

All in all, quite pleased.
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File Type: jpg IMG_0957.jpg (80.2 KB, 23 views)
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(Post Link) post #7 of 17 Old 09-05-18 Thread Starter
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Somewhat flush with the success of the lower rad I then decided to mock-up an intake to see if my idea would work.

I used bits and bobs laying about in the shop, so it looks absolutely gash and is NOT anything like how I will have it when complete but as a proof of concept I'm happy with it. I'll run it up on the dyno when I get 15 mins free and see if it actually does anything, I'm not going to be surprised if the net gain is a big fat zero lol...

I'll include a couple of pic's - and yes, it currently looks completely ****e and will be changed if it gives any power increase (and if no power increase I'll go back to the big 'dustbin' they fit as standard!).
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Member car:

The train :(

I assume that the bonnet clears it, otherwise how would you close it?

I am not saying I like it but you could cover it up with a comic relief red nose.....
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(Post Link) post #9 of 17 Old 09-05-18 Thread Starter
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Yes, it clears, physically there is no issue - aesthetically it's (IMO) absolutely appalling, it's only there to dyno
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Member car:

The train :(

I have to agree on the (non) aesthetics!
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is the lower rad you acquired a custom item or of the shelf. i,m guessing its thicker to allow for increased cooling lost by the reduced height of the original
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(Post Link) post #12 of 17 Old 07-06-18 Thread Starter
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It's a 40mm unit
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(Post Link) post #13 of 17 Old 07-06-18 Thread Starter
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I fabricated an exhaust complete with equal length front pipes
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Looking forward to any updates on your project. What happened with the damage from the truck hitting your car? Is it fixed or you not fussed?
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(Post Link) post #15 of 17 Old 07-06-18 Thread Starter
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Still there And yes, I am (very much) "fussed" but I need to get the cash together to get it (properly) sorted
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(Post Link) post #16 of 17 Old 07-07-18 Thread Starter
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So I tried a slightly different intake arrangement...

Like all the other ‘try’s’ it’s 100% ‘work in progress’
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This afternoon I had a little spare time so I popped it on the dyno... the lower figure was just after getting it - completely stock, phase 1 GTV V6.

The higher run is with the intake pictured above along with my own design of equal length downpipes (50mm) into a 70mm system.

NO other changes!
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