Hi all, have a '92 325is with the non-vanos M50. Had the car for 18 years and now considering going turbo or swapping in an S50.
Mainly the car is used for canyon runs, monthly auto-x's and the occasional small road trip.
If I would go turbo, I would like to build a system with the following qualities:
- Excellent reliability
- Minimized turbo lag, suitable for auto-x
- Little or no cutting body work
- Decent fuel mileage
So please let me know your thoughts.
Cheers
Last edited by xxxxxxx; 07-01-2021 at 10:15 PM.
CARS
02.92 325is / 06.72 2002 / 02.91 XJ / 08.04 R53 JCW
S50 swap is probably cheaper in the long run. For a reliable and suitable turbo build, look to have a budget of at least $10k.
You'll be more competitive in autocross keeping it stock...
would take the S50 with the stock tune over a budget turbo setup, if you can find one.
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If you can weld and fit pipe, you can do it for about $5-6k. Paying someone else for that is going to add up. If you do mild boost, say less than 1 bar, don't do burnouts at every stop sign, should be reliable. So, reliability is related to your driving style. Remember, everything downstream of the crankshaft will be under the additional stress. As far as lag, you should still have stock response until boost starts to come on. You don't need a turbo for canyon runs or auto-x, but it sure is fun for open road pulls.
Tom
Currently 1995 M3 manual coupe, 1993 325is
Past cars
2003 530i
1998 528i
1995 530i
1988 528e
1988 535i
1987 2.7i
1972 2002
I don't know if this is what you are looking for, but I need if out of my garage.
https://www.facebook.com/groups/1788...62228467436849
https://www.bimmerforums.com/forum/s...9#post30633189
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