Sorry to thread jack but what kind of numbers can be expected from a 3.2@ to 4.0 conversion if its planned to be a sunny sunday driver. looking for the happy medium between hot rod street and reliability.just wondering if jumping up to 4.0 is worth it vs 3.6-3.8. Thanks...now back to the regularly scheduled thread.

No need in going 4.0 for this application. The cost increase is not worth it.

My 3.6 is plenty, and the 3.8 will blow your mind. The 4.0 package is only worth the added money for those who ned the power for the track and want to chase down GT3s. The owner of this 4.0 has a GT3 RS 4.0 and wanted a pair :-)

Jake, I thought the limit for a 3.2 was 3.6 (using LN nickies)? You can do a 3.8 ? :cheers:

Jake, how do I get pricing for:

3.2 to a 3.6
3.2 to a 3.8
3.2 to a 4.0

Thanks!:)

egad, two ways to displacement increase - bigger bore (ln nickies) or longer stroke (different crank).

info on bore here (check bottom of page):

"Nickies™" for the Porsche Boxster, Cayman, and 911 Models

and info on stroke here:

AUTOFARM | Performance Options

the ln info sets the limit on bore increase, but I've read in jake's past posts that he can go bigger with some specific castings. so, methinks to get 4.0 out of a 3.2 you are pushing the bore to the limit on specific engines only and sticking a crank from a later m96 or m97 in (which requires much revision to carriers, bearing surfaces, etc.). and then you have to deal with a 4.0 trying to breathe through 3.2 heads which means either a lot of machining or later heads.

it's like the ax analogy - "I've had the same ax for 20 years, changed the handle a few times and the head a few times, but same old ax" - probably not much left of the original 3.2 once done.

The 3.6/3.8 crank has larger main journals so you need the crank carrier housing too. 3.6 connecting rods are shorter so you need rods as well as pistons.
Going past 3.6L with a 3.2L gets you to the point of diminishing returns quickly

What about forced induction after 3.6?
... if you really feel like you need that much power

Thats because thats al thats advertised. Nothing here is standardized, so we can build anything and we do all the time. We have bore sizes that LN only provides to us; thats the benefits of being the exclusive developer of their entire product line since the company was founded.

Flavor987S,
email me at jake@rabyenginedevelopment.com for pricing. I will have a ton of questions for you, because there are tons of variables at these levels.

Thanks. Will do.:)

Hey guys, thanks for all the great info and help. I ended up purchasing the above engine and should be able to have it installed at the end of next week.

Its a 2001 engine with 60k miles and rebuilt heads. They will be installing my intake, fuel system and engine management systems to get it working with the 2003 car. Other then that it is a lot simpler then the 3.4 cayman swap and shouldn't cause any headaches.

Now I am wondering if I should install the LN IMSB while I have the chance.

I am not sure if I am going to sell the car right away or keep it. Either way the LN bearing might be a good investment for my personal peace of mind or the next owner's.

I am also having trouble trying to think of replacement cars for the boxster I would like to have a car that is a little more practical and that I could run year round instead of having two cars. I am willing to spend a reasonable amount on anual mantinace but can't afford any more catastrophic failures.

Cars I am considering not in any real particular order:
E46 BMW m3
135i
B7 Audi S4
996 c4s or c2
C5 Corvette Z06
2008+ WRX STI
987 Cayman/Boxster S
Honda s2000
May be willing to stretch the budget to include
997 C2
e90 M3
B8 Audi S4

I do love Porsches, but I am open minded and willing to look at almost anything fun or quick. Prestige is not a a big factor to me, I am 20 year old university student and have been running my detailing company since the age of 13. I have owned 8 cars 3 audi's (a4,a4,a6) 3 bmws (325ci, 330cic, 330ci) and 2 boxsters. Before the 03 box cars had cost me almost nothing, repairs or depreciation. Now I am looking for a car that I will keep for a while and enjoy. I enjoy doing club drives/gimmick rallys and the ocasional Auto X or DE event.

Your old 2001 engine is a 5 chain, the 2003 engine is a 3 chain. These two have different variable valve timing arrangements with the 2003 engine having vane cell adjusters with load sensitive camshaft positioning adjustments. The 2001 engine has 25 degrees of variable valve timing while the 2003 engine has 40 degrees.

This is going to require some conversion and will have some complications. It is not a 1 for 1 swap thats simply plug and play.

The 2003 engine has a single row IMS, absolutely take the opportunity to retrofit the bearing or install the IMS Solution. Not doing it now, while it is apart simply isn't the smartest decision.

Thanks for the quick reply Jake. I will look into the timing arrangements and discuss with my mechanic before the swap begins.

One day when life allows it, I will have you build and engine for my dream Pcar!