[ultimateendz]

Was thinking of reinforcing some of the engine internals next since im on the quest for most powerful e93 in the world... I like the fact that VAC will do

Complete Disassembly & Cleaning
Comprehensive Leak, Crack & Pressure Test
Inspect All Components For Irregular Wear
Our High performance Multi Angle Valve Job using Serdi Equipment
All New VAC Uprated Valve Guides
Viton Valve Seals
Reconditioning & Blueprinting of Your Valves
Balancing of Your OE Springs
Trueness Checked & Resurfaced Mating Surface
Unshrouding of Valves
Attention to Potential Hot-spot Areas and Chamfering

and i thought i might as well add the forged pistons in as well

anyone opposed to this or think its overkill?...I wanna make sure my engine is nice and clean and actually capable of handling the extra stress....

already got the quote and its not bad at all...1299 for stage 1 and 2999 for stage 3

[DefactoM6]

Contact Dave@Bavarian Solutions if you want a truly world class engine/head. He builds the strongest, most powerful BMW motors, period. Tell him that I sent you.

[ultimateendz]

Originally Posted by DefactoM6

Contact Dave@Bavarian Solutions if you want a truly world class engine/head. He builds the strongest, most powerful BMW motors, period. Tell him that I sent you.

will definitely keep him in mind...thanks

[Sniz]

Originally Posted by ultimateendz

Was thinking of reinforcing some of the engine internals next since im on the quest for most powerful e93 in the world... I like the fact that VAC will do

Complete Disassembly & Cleaning
Comprehensive Leak, Crack & Pressure Test
Inspect All Components For Irregular Wear
Our High performance Multi Angle Valve Job using Serdi Equipment
All New VAC Uprated Valve Guides
Viton Valve Seals
Reconditioning & Blueprinting of Your Valves
Balancing of Your OE Springs
Trueness Checked & Resurfaced Mating Surface
Unshrouding of Valves
Attention to Potential Hot-spot Areas and Chamfering

and i thought i might as well add the forged pistons in as well

anyone opposed to this or think its overkill?...I wanna make sure my engine is nice and clean and actually capable of handling the extra stress....

already got the quote and its not bad at all...1299 for stage 1 and 2999 for stage 3

that is not overkill when your asking the motor to put out 2x the stock HP

+1 for Dave at BavSol

[ultimateendz]

im hearing that lowering the compression is gonna be the way to go as well...but will have to be re-tuned to do so....shiv care to comment?

[Sniz]

Originally Posted by ultimateendz

im hearing that lowering the compression is gonna be the way to go as well...but will have to be re-tuned to do so....shiv care to comment?

yes it will have to be retuned and yes its the way to go for big power.

[ultimateendz]

Originally Posted by Sniz

yes it will have to be retuned and yes its the way to go for big power.

*writing down list of mods for next year*....if shiv wants my car to re-tune when it gets done he can have it for as long as he needs...ill rock my x3 in the mean time

[Funkmob]

This would be nice if you could combine this with some agressive cams , and valves and springs to accept some higher rpm's.

This is actually (only) blueprinting the head , wich is not bad at all , but i don't see much power gains in there.

But if you open up the engine to fit those pistons , you might as well recondition the head.

[ultimateendz]

Originally Posted by Funkmob

This would be nice if you could combine this with some agressive cams , and valves and springs to accept some higher rpm's.

This is actually (only) blueprinting the head , wich is not bad at all , but i don't see much power gains in there.

But if you open up the engine to fit those pistons , you might as well recondition the head.

yea...im not really looking for power doing all this...more so a precaution/safety thing im going for

[Alpina_B3_Lux]

Originally Posted by ultimateendz

yea...im not really looking for power doing all this...more so a precaution/safety thing im going for

Same here.

Once I upgrade my turbos early next year I'll also replace the pistons with forged lower compression ones (with a compression ratio comparable to the Alpina B3 BT) as well as lightweight titanium rods, both from Pankl Racing. Different engine mounts as well, probably, but I don't know whether a cylinder head revision is really necessary.

Alpina_B3_Lux

[ultimateendz]

Originally Posted by Alpina_B3_Lux

Same here.

Once I upgrade my turbos early next year I'll also replace the pistons with forged lower compression ones (with a compression ratio comparable to the Alpina B3 BT) as well as lightweight titanium rods, both from Pankl Racing. Different engine mounts as well, probably, but I don't know whether a cylinder head revision is really necessary.

Alpina_B3_Lux

didnt realize the alpina was using different compression....interesting...ill go look it up

[vasillalov]

Originally Posted by Funkmob

This would be nice if you could combine this with some agressive cams , and valves and springs to accept some higher rpm's.

Sorry, but aggressive cams are not good for FI! Aggressive cams profiles generally have an overlap and you have a situation where both the intake and the exhaust valves are open. For NA engines this works great because it creates an additional suction effect on the intake side so that more air can be crammed in.

In FI cars this will create all kinds of havoc because the intake manifold is already pressurized by the turbos. Aggressive cams with overlap will simply cause a boost drop at best and quite possibly your engine will be running rich as the ECU tries to add fuel for air that managed to escape through the exhaust valves!

[ultimateendz]

Originally Posted by vasillalov

Sorry, but aggressive cams are not good for FI! Aggressive cams profiles generally have an overlap and you have a situation where both the intake and the exhaust valves are open. For NA engines this works great because it creates an additional suction effect on the intake side so that more air can be crammed in.

In FI cars this will create all kinds of havoc because the intake manifold is already pressurized by the turbos. Aggressive cams with overlap will simply cause a boost drop at best and quite possibly your engine will be running rich as the ECU tries to add fuel for air that managed to escape through the exhaust valves!

VAC already specified there is no need for a stage 2 which would have been cams because the research they did proved no significant improvements

[dzenno]

Originally Posted by ultimateendz

Was thinking of reinforcing some of the engine internals next since im on the quest for most powerful e93 in the world... I like the fact that VAC will do

Complete Disassembly & Cleaning
Comprehensive Leak, Crack & Pressure Test
Inspect All Components For Irregular Wear
Our High performance Multi Angle Valve Job using Serdi Equipment
All New VAC Uprated Valve Guides
Viton Valve Seals
Reconditioning & Blueprinting of Your Valves
Balancing of Your OE Springs
Trueness Checked & Resurfaced Mating Surface
Unshrouding of Valves
Attention to Potential Hot-spot Areas and Chamfering

and i thought i might as well add the forged pistons in as well

anyone opposed to this or think its overkill?...I wanna make sure my engine is nice and clean and actually capable of handling the extra stress....

already got the quote and its not bad at all...1299 for stage 1 and 2999 for stage 3

how many hours labour did they quote you?

[ultimateendz]

Originally Posted by dzenno

how many hours labour did they quote you?

they didnt quote me on the labor yet..unless it was rolled into the price but i doubt it...id assume about 1500 in labor

[DefactoM6]

With a Bavarian Solutions head and a set of their fully custom billet cams (each set designed specifically for your exact setup), I think you will discover an astounding amount of extra breathing, even on a stock bottom end.

I still am curious to see how much power these motors can hold before bending a rod (IE what the power limits are when the car is really tuned dead on). Unfortunately (sorta ) Dan, I think it will take a pretty serious big single and serious fuel system (with no meth bandaids!) before that happens. Cracked ringlands and such don't count.

[ultimateendz]

Originally Posted by DefactoM6

With a Bavarian Solutions head and a set of their fully custom billet cams (each set designed specifically for your exact setup), I think you will discover an astounding amount of extra breathing, even on a stock bottom end.

I still am curious to see how much power these motors can hold before bending a rod (IE what the power limits are when the car is really tuned dead on). Unfortunately (sorta ) Dan, I think it will take a pretty serious big single and serious fuel system (with no meth bandaids!) before that happens. Cracked ringlands and such don't count.

lol...im sure everyone on here that knows me knows ive got my eye on the single turbo kit...ill have my deposit good and ready after its tested and released

[enrita]

Originally Posted by Alpina_B3_Lux

Same here.

Once I upgrade my turbos early next year I'll also replace the pistons with forged lower compression ones (with a compression ratio comparable to the Alpina B3 BT) as well as lightweight titanium rods, both from Pankl Racing. Different engine mounts as well, probably, but I don't know whether a cylinder head revision is really necessary.

Alpina_B3_Lux

you know anybody doing upgraded engine mounts? If you open the engine you better do a cyl. head revision and port the intake.

[Alpina_B3_Lux]

Originally Posted by enrita

you know anybody doing upgraded engine mounts? If you open the engine you better do a cyl. head revision and port the intake.

For the engine mounts I believe to have a source, but that needs to be confirmed. Concerning the head revision / porting, I'll see what the specialist that I'll give my engine to will recommend, as I don't have the technical knowledge to assess whether that is necessary or not. I believe you had it done on your engine - did you notice an improvement afterwards?

Alpina_B3_Lux

[DefactoM6]

Well alright then. . In that case, I would take what VAC says with a serious grain of salt. Did they give you test data on how the head performs stock? CFM (and @what in HG&lift?), velocity, etc? These motors were built for a balance of efficiency, cost and power. The first two don't help you when all you care about is the third. Oh, and to what VAC said about cams not being needed, that is a bunch of crap. A properly designed head with a cam setup that has been designed to match will make significantly more power/TQ, will improve spool characteristics, and will improve your engine's resistance to detonation, which further magnifies the improvement in HP/TQ.


Vasialov, just because you have a set of cams that are "aggressive" doesn't mean that they aren't right for a turbo car. The duration is pretty useless for telling whether or not a cam is good for a turbo car or not. Look at lift and the cam profile. And for the record, the same rules do not apply to S/C cars.

[raceyBMW]

Originally Posted by Alpina_B3_Lux

For the engine mounts I believe to have a source, but that needs to be confirmed. Concerning the head revision / porting, I'll see what the specialist that I'll give my engine to will recommend, as I don't have the technical knowledge to assess whether that is necessary or not. I believe you had it done on your engine - did you notice an improvement afterwards?

Alpina_B3_Lux

Doesn't the 335is used beefed up engine mounts? Maybe you could look into those.

[enrita]

Originally Posted by Alpina_B3_Lux

For the engine mounts I believe to have a source, but that needs to be confirmed. Concerning the head revision / porting, I'll see what the specialist that I'll give my engine to will recommend, as I don't have the technical knowledge to assess whether that is necessary or not. I believe you had it done on your engine - did you notice an improvement afterwards?

Alpina_B3_Lux

yeah improvement definetely , faster revving and more pull up top. Let me know when your connection confirms the engine mounts