Could I race my 116 Trophy car in Roadsport?
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- Опубликовано: 12 сен 2024
- I can't do the far away 116 Trophy races, and that leaves a big gap in my calendar. It just so happens that there are closer Roadsport races that don't clash with my Trophy races. Question is, could I make my Trophy car competitive in Roadsport Class D?
BMW 1 Series Mods 116i E87 N45 N45B16 Race Car Build 2004 2005 2006 Paul Offord 116 Trophy N46 750 Motor Club 750 MC
Hi Paul, interesting subject. A different approach could be to spend the missed races budget on testing at the tracks you will be competing at later in the year.
Funny you should say that as that's exactly what I decided to do. I think the answer for next year is to do a couple of other series on an Arrive & Drive basis.
You indicate a N46B20 engine and mention the 120i. It also came in the 118i. The 120i has the more powerful engine with around 170 hp and the 118i with the same engine has around 145 hp iirc. Same engine but I think the difference is in the engine management and injector size 🧐
I run a 118i with the N46B20 engine with a header (from Russia, bought on EBAY in 2019) and a custom-built larger-diameter exhaust system with sport-cat, resonator and an Eisenmann backbox. The difference in power compared to the stock exhaust is noticeable.
Your best bet in my view therefore seems to be the N46 engine with some mods. Keep us posted.
Great input, Loek. Thanks.
Hiya Paul. Interesting video as ever. My tuppence....forget about modding the 116 and either plump for getting another vehicle or do some sort of car swap with someone you can trust. Storage on the second vehicle would be less than all that faff plus (importantly) your 'time cost' of switching everything around from month to month. Just pick a timeless and versatile car for roadsports which you can sell or rent out whenever youre not using it and you'll probably be better off net by the end of it all. Just an outside perspective in case youre tunnel visioning it all a bit.
Thanks, Stephen. I think I've reached a similar conclusion. Arrive and Drive could be the answer for me.
The N46B20 engine has Valvetronic. So it will be quite a lot of work to fit it in the 116. Unless you can lock the valves at full lift, and not use the Valvetronic at all. Might work, BMW has put the rev limiter on Valvetronic engines to 6500 as it is a bit fragile. However a n46b20 bottom and a n45 head might do the trick, and be very close to the N45b20 fitted in the 320si.
Thanks. That's great info.
Hi Paul,
Weights for you:
Bonnet: 18.2kg
Tailgate: 10.5kg
Tailgate Glass: 3.7Kg
All from the BMW OEM Parts Catalogue
Dash Panel is 5.5kg lightest depending on what spec your car is. Heaviest was 6.7Kg
Cheers for the info.
You can fit 15" wheels that are lighter and tires are cheaper. I am using BMW Style31 wheels. They just barely fit. I just grinded like 1mm of from the rod ends lower corner for extra safety.
Front brakes. You can use 286mm front discs with ATE calipers- this way E36 325 front racing pads fit (good selection and cheaper prices).
That's an interesting idea. I'll probably stick with the 16" x 7”J ET20 wheels that we use in the Trophy series as it will give me more options, in that I can use my Trophy tyres if I get desperate.