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VulvaS40T4

My Volvo S40 T4 700hp with Holset

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Looks awesome Bud!   My block is still waiting in line at machine shop for sleeve install.

Can you put a straight edge on your block and measure how high the shop left your sleeves?

 

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Diesel block stronger = more material and higher and not bolt on.You need to modify lots of things but its do able.Here scandinavia lots off available but because its not easy mod not so many have been made.

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Dual breather, first one on stock location 1.5liters and blows to extra breather 1.5liters also and from extra breather air goes to under engine. Both breathers have return to oil pan over oil level and splash shield on those returns inside oilpan. :)

dualbreather.jpg

Edited by VulvaS40T4
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Nice work!

I found having dual baffled cans worked the best in order to preserve as much oil returning to the block as possible under high rpm / load situations. Yours is much more compact :) My secondary can was equal to engine displacement = 2.3l 

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How much of an issue is blowby at your power level? Does the blowby at your power level totally overwhelm the stock setup?

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E85 is the reason why so much blow by on standing mile and only in 5.gear over 280km/h. Under that blow by is no problem. Stock setup works okay in 4cyl whiteblock to 500hp after that you need bigger ones. :)

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Modded dual plenum intake manifold. Earlier i had 45mm OD / 39mm ID S-shape runners and now i have 50mm OD / 44mm ID 30degree angle runners. Flow results soon. :)

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Edited by VulvaS40T4
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Nice diffuser plenum! :)

Why not open up the flange & intake ports like the RN heads?

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Restriction point of the flow was not in cylinder head port or intake manifold flange so no need to do anything to those. :) My cylinder head flows with 11mm lift 204hp (4cyl) / 255hp (5cyl) so its plenty. ;)

I will now flow test my modified intake manifold with cylinderhead and also stock volvo intake manifold with cylinder head. Its hole package flow what counts. ;)

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5 hours ago, VulvaS40T4 said:

Restriction point of the flow was not in cylinder head port or intake manifold flange so no need to do anything to those. :) My cylinder head flows with 11mm lift 204hp (4cyl) / 255hp (5cyl) so its plenty. ;)

I will now flow test my modified intake manifold with cylinderhead and also stock volvo intake manifold with cylinder head. Its hole package flow what counts. ;)

Nice. Great that you can flow test to gauge actual performance. What difference do you anticipate from the design change, or was it mostly to increase ID?

18 minutes ago, Martijn_B said:

How long do your runners measure?

Looks close 6" from flange to plenum to me... lets see what he says :)

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Runners are total 10" from intake valve to plenium. Just runners from intake manifold flange are 6.5". Optimum length would be 12" from intake valve on my engine but space wont allow it.

Runner size is now optimal and also shape is okay now so im hoping to get 190hp flow with intake manifold on cylinder head. Cylinder head alone flows 204hp. :)

 

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