BMW 2002 SR20 Swap| Builds and Project Cars forum |

jakeb HalfDork
10/16/14 9:18 p.m.

This is a unique one to say the least. The customer wanted a fast fun 2002 that would put a huge smile on his face every time he drove it. The car came with a rebuilt m10 but he wanted efi and a turbo...A Nissan S15 SR20det was picked to check those boxes.

So here we go.

Unwrapping with it's new home in the background.

First test fit of the engine and a lot of things are in the way....booster, master cylinder, pedal box, steering box and linkage, etc etc....so things will have to move.

Switching to wilwood hanging pedals.

Steering rack

linkage

Lof8 Reader
10/17/14 8:38 a.m.

Always cook projects from you, Jake! Are you doing this work full time yet?

jsquared Reader
10/17/14 10:49 a.m.

Nice! Keeping the Nissan 6-speed or the OEM T28?

Did you get a chance to do fully-dressed weight comparisons between the two engines or engine/trans combos? SR20DET + trans is usually quoted at 493 lbs (S13 variant) but more info and weight of the 6-spd would be cool to know. And to see if it might lighten the nose a bit...

jakeb HalfDork
10/17/14 5:46 p.m.

Lof8 wrote: Always cook projects from you, Jake! Are you doing this work full time yet?

Yes full time now

jsquared wrote: Nice! Keeping the Nissan 6-speed or the OEM T28? Did you get a chance to do fully-dressed weight comparisons between the two engines or engine/trans combos? SR20DET + trans is usually quoted at 493 lbs (S13 variant) but more info and weight of the 6-spd would be cool to know. And to see if it might lighten the nose a bit...

yes keeping 6 speed and OEM t28. I did not weigh it. I should and compare it to the m10. Might end up being about the same . I am sure the trans is a little heavier but that is low so.....

jakeb HalfDork
10/17/14 5:46 p.m.

Turbo being mounted up top

Starting to fit the engine with trans (up to now the trans was always off)

Trans mount was pretty simple.

With the steering rack in the control arms had to be remade.

Engine mounts tacked together. Using e28 mounts (pan will be replaced)

Lots of room for a radiator and fan

Swank Force One MegaDork
10/17/14 5:51 p.m.

I hate how you make these swaps look easy.

jsquared Reader
10/18/14 2:06 p.m.

If the new owner ever decides to upgrade the turbo, I'll take the OEM T28 off his hands

The GReddy pan for the SR is a nice piece, I've got one on mine. Extra capacity, baffled, cast cooling fins on the exterior. I'm mainly interested in the trans weight difference, but the overall package would be neat for comparison purposes. Does the M10 have an iron block? The S13 SR20DET + 5-speed is usually quoted about 5 lbs lighter than the KA24DE + 5-speed... SR's aluminum block basically cancels out weight of the larger head and turbo.

noddaz Dork
10/18/14 2:12 p.m.

Continue please...

oldeskewltoy UltraDork
10/18/14 3:01 p.m.

it just so happens that I'm in the process of learning more about the SR20...

I'm even getting the flowbench prepared as well....

jakeb HalfDork
10/18/14 3:06 p.m.

Swank Force One wrote: I hate how you make these swaps look easy.

haha thanks!

The thread does make it look a LITTLE easier than it really is. Getting this engine in the car was a bit tricky. It's a lot taller than the m10 so with the trans hooked to the SR it just wasn't going in from above. We ended up pulling the front subframe and lifting the engine from the below and then bolting the subframe back on.

I also had to remake the control arms a couple times. Always one step at a time tho...

jsquared wrote: If the new owner ever decides to upgrade the turbo, I'll take the OEM T28 off his hands The GReddy pan for the SR is a nice piece, I've got one on mine. Extra capacity, baffled, cast cooling fins on the exterior. I'm mainly interested in the trans weight difference, but the overall package would be neat for comparison purposes. Does the M10 have an iron block? The S13 SR20DET + 5-speed is usually quoted about 5 lbs lighter than the KA24DE + 5-speed... SR's aluminum block basically cancels out weight of the larger head and turbo.

I am planning to get one of the bigger pans. This one is bent as you can see.

noddaz wrote: Continue please...

There will be a little delay in the next update as we are working on other projects as well. Might be a week or two. This car will also be getting an e30 rear end, trailing arms, etc etc Or at least that's the plan.

turtl631 Reader
10/19/14 7:47 p.m.

Cool, it's a nice swap package and they're not that pricey for what they are. I'm surprised rwd SR20 doesn't get more love on this board.

dyintorace UberDork
10/20/14 11:39 a.m.

jakeb - Would you PM me? I tried you but received an email failure. TIA

AngryCorvair UltimaDork
10/21/14 4:53 p.m.

i rolled my eyes when i read the thread title, but when i saw the thread starter i had to give it a look. interesting.

jakeb HalfDork
10/21/14 7:14 p.m.

turtl631 wrote: Cool, it's a nice swap package and they're not that pricey for what they are. I'm surprised rwd SR20 doesn't get more love on this board.

sent

can also email to jake@classicdaily.net

CarRacer New Reader
10/22/14 1:50 p.m.

I saw a car with this swap at the last Minnesota Cars & Coffee I attended. It was a really well done swap and the owner was very courteous. I don't have much to offer aside from two photos of it.

Thanks for sharing your build, I always enjoy weird engine swaps.

jakeb HalfDork
3/15/15 8:34 p.m.

Really need to keep these threads updated.

Anyway...intercooler bits worked out.

Also seeing as this is going to make a good deal of power and the owner wants to drive it VERY hard the stock 2002 small case diff isn't going to be very happy about that we are working up a solution to install e30 trailing arms, axles and a diff into an 02.

Here are some pics of the process so far.

Build a jig for the 2002 bits.