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Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

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Shipper 01
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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by Shipper 01 » Sat Apr 30, 2016 12:05 am

tschultz wrote:Great, thanks for clarifying. To fit the later model subframe, does this mean you have reinforced the subframe mount, or is tearing no longer an issue with the new design? I imagine it is a custom setup you guys used...
We reinforced it. Stiffener plates and a solid square bare welded through and into the entire transverse beam. Then the bomb proof diff mount. There was also a tear in the floor which we welded up. Go back to page 1 and top of page 2 and you can see a bit of this work. (wait, wrong forum for those pages. Go here http://www.bimmerforums.com/forum/showt ... s-d-633CSi

With 430nm of torque I wanted to be sure. Car is 39 years old this year.

Shipper 01
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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by Shipper 01 » Tue Sep 20, 2016 1:23 am

Update, all parts in for final build.

Parts to go on;

1. Complete head re-build. Will run CATCAMS 293/279 cam with 12.45mm valve lift - http://catcams.co.uk/acatalog/1301008.pdf . Cams now here to install.
2. Will run performance valves, springs, seats, retainers, the lot. Here to install.
3. Will run the megasquirt MS3-PRO stand alone ECU. Here to install.
4. Will run PLX multi-gauges (2 of) and water temp/pressure, oil temp/pressure and A/F direct live stream to the gauges. TNT'ing across now. http://www.plxdevices.com/Automotive-Ga ... -s/108.htm
5. Will run 135i turbo front 6 piston calipers with hopefully 338mm by 28mm discs. Purchased, pick up Thursday. Rears are already 540i's.
6. New used un-cracked dash to go in.
7. Twin age correct recaros to go in.
8. internal under dash fan and evaporator to come out. To lighten her up a little (and it does not work!).
9. Large case 3.71 LSD now in.
10. New carpet to be sourced. Have 6sqm of Alpina Cloth so will re-upholster the car when carpet is done (next year).

So, over the next 4 weeks of completing the above build she should be close to 390hp, under 1480kg, 338mm 6 piston big brakes front, and well on her way to being the fastest NA 633 in Aus. Hopefully dyno and then first test drive in 4 weeks time.

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baders
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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by baders » Tue Sep 20, 2016 2:13 am

Great news Josh. Also adding MegaSquirt to the list, though mine will probably be MS3 Assembled because I can't be bothered with the hassle of coil on plug.
1986 635csi LOCUTUS
Arktis Blau Metallic / Pearl Beige
S38B36/Close ratio dogleg 5sp
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Shipper 01
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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by Shipper 01 » Tue Sep 20, 2016 4:34 am

CatCams have arrived in the office along with the hight strength valves, retainers, caps, springs etc.

Off to mechanic today.

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Shipper 01
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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by Shipper 01 » Mon Nov 28, 2016 9:46 pm

Update- VAC sent the wrong valves sending B36. B38 valves arrived yesterday and head off to machine shop today.

Hopefully together and running early next week. Then off to dyno shop to have megasquirt ms3 pro installed and tuned. Only issue is whether or not my dyno shop is booked out prior to Christmas.

Shipper 01
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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by Shipper 01 » Fri Jan 20, 2017 1:53 am

Catcams in and engine back together. Needs fnalising over the coming two weeks and a change to the S50 timing chain tensioner. Hopefully to the dyno late Jan.

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baders
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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by baders » Fri Jan 20, 2017 7:34 am

Nice work Josh. I'm still intrigued as to your cooling solution used ? Is there an electric pusher fan in front of the radiator ?
1986 635csi LOCUTUS
Arktis Blau Metallic / Pearl Beige
S38B36/Close ratio dogleg 5sp
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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by ericono » Fri Jan 20, 2017 12:38 pm

Curious about more info on the brakes. What size wheels are you running again? 17"? Will those calipers properly fit inside them and still grip the rotor? I ask becuase I thought the original wheel size these were designed for was 18 or 19" wheels. Also, are you changing the master cylinder? Do you know the piston diameters in those 6 piston calipers?

Sorry for all the questions and thanks for sharing,

Eric
'85 M635, '00 528iT, '98 Z3

Shipper 01
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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by Shipper 01 » Sun Jan 22, 2017 5:16 am

ericono, the wonderful thing about BMW wheels is that the Aussie Holden Commodore uses the same 5 bolt, 20mm offset 120mm bolt spacing layout. So over here, we have plenty of wheels to fit our beemers. That also means that we have plenty of disk brakes.

So;

The 135i uses a 333mm disk. The Holden Commodore v6 and v8 from around 2006 uses a 328mm diameter disk. The 5mm difference has zero impact.

The hat height and diameter are important as there is no way on earth a 135i disk will fit an e12 or e24 hub.

So this is probably what I'll use. http://www.dba.com.au/dba-part-finder/? ... L36/_147KW

We have completed a dummy fit and it all works (with wheel back on with clearance). We used a ply brake adapter plate.

I may need to replace the master cylinder and brake boosters. Again once the car is running on song and driven in we'll turn to the brake upgrade. Would love to remove the twin master cylinders and boosters from my car for something far more modern.

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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by GazM3 » Mon Jan 23, 2017 7:26 pm

I'm pretty sure the e46m3 disc is around the 325mm and will probably go close to fitting behind a 17" rim and have a friendly hat offset. This is what I used for the 840ci brake upgrade.

What is the centre spacing on the bolt holes on the 135i caliper. Is it the usual BMW 120mm?


Also if doing a mega upgrade on the fronts you may need to consider upgrading the rear. Not sure if the e34 540i brakes fit the early e24 hub but they are a bolt on for the late model e34 hub and reasonably easy/inexpensive to purchase still.
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Shipper 01
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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by Shipper 01 » Mon Jan 23, 2017 10:50 pm

The 135i has a much larger hub diameter and a completely different hat height, so just cannot be used. I'm pretty sure the e46 disk works as well but will go the HSV route.

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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by tschultz » Fri Jun 23, 2017 6:19 pm

Can you send your MS2 tune over? Looking for settings for S38B36/38 to get started with on MS2 unit.

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Re: Gertie Nears Completion -S38B38 with 370hp+ now in my 633CSi

Post by Shipper 01 » Fri Jul 06, 2018 12:11 am

Bimmerforums has the entire write up for this build.

Long story short, finally endurance race S38B38 on the dyno and ready for tune prior to going back in. At the same time we will;
  • place new front recaro sports seats.
  • place new uncracked dash.
  • place new M Sport stearing wheel.
  • place new 6 speed from an E39 M5.
  • place new 300km/h 8000rpm M Power gauge cluster from Ivo.
The race exhaust is already on as is the bomb proof diff mount and the large case 3.73 LSD. I then need to do the interior and repair two small rust bubbles. Those can wait a year or two. Want to drive it first with the 5 speed and have some fun.

here's the link to the Bimmerforums updates: https://www.bimmerforums.com/forum/show ... CSi/page10

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