Service -- » Trimning

Som Alpina och BMW verkstad bygger vi givetvis om motorer också.

Vi utför det mesta inom effekthöjning - efter motorombyggnad lämnas bilen in och körs på rullande landsväg och mappas om till dess nya specifikationer.
Är Ni intresserade av liknande kontakta oss per mail. Alltid uppmätta siffror - inga fantasisiffror.

Vi är även återförsäljare för KCR, genom KCR kan vi erbjuda våra dieselkunder effektökning trots bebehållen/minskad förbrukning.
Vi tar 6900:- monterat och klart för de flesta modeller. På KCR´s hemsida hittar ni mer information om KCR dieselboxar. Räkna med 2 dagars leverans!

Exempel på motorbyggen.

BMW 325 E30 Standard 170hk. 12 Ventiler
Efter ombyggnad 261hk. Endast sugtrimmning. Nya kolvar, kammar, vevaxel osv.

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Kundberättelse:

BMW M3 E30

Engine rebuild in E30 M3 at Jarls Bilservice: experiences by Tim from Denmark.

I purchased my 1986 E30 M3 after the summer of 2005 and imported it to Denmark. Everything was fine for about 6 months and I drove it on a few track-days with BMW Club Denmark, but was very careful never to exceed the rev-limit of 7200 rpm. The engine had been rebuilt about 2 years before I bought it by a supposed expert workshop in England, I therefore had confidence the motor would run well for a long time. However I started to experience trouble starting the car when it was warm – but never when it was completely cold. If I stopped the car to refuel at a tank station then often I couldn’t restart the car. The car also would not idle at all (I really got some practice at ‘heal and toeing’), was down on power and I could hear pre-ignition. The problems got worse and my M3 dreams really started to turn into a nightmare. I spent about 12 months trying to solve it myself and replaced a heap of parts, and I am now on first name basis with the guys at the service counter at BMW in Lyngby!

Eventually I conceded defeat and finally decided to get expert help. But who to choose? My E30 M3 is not something I wished to give to just any workshop, and I wanted someone that really knew what they were doing and had experience with the motor. I wasn’t too convinced by the possibilities on Sjælland. I heard however that one of my mates just had the engine rebuilt in his e30 325i M-tech 1 by Jarls Bilservice in Helsingborg, and was very happy with the results. Sten Jarl had also been involved in racing E30 M3s back in the day – what could be better! So, I decided to give Jarls a try.

I rang them up and after trying to use my broken Danish, we decided that English was probably a good idea. Fortunately Sten and Martin at Jarls speak excellent English, so I was able to rapidly outline the problem with the car, and I booked it in to get the valves adjusted and have a compression test done. I left the car there in the morning and I was quite surprised to be able to borrow an old 5 series BMW so I could get to work back in Denmark easily. I also got a good piece of advice from them – next time I should try and leave my car there the night before, so it would be completely cold when they started to work on it the next morning.

Sten rang me up in the afternoon to give me the bad news – the motor needed to be rebuilt. When they started to adjust the valves, they found there was no free space, so the valves had not been shutting properly. Even after adjusting them there was very poor compression in the engine. So something was definitely drastically wrong – most probably burnt valves since they had not been shutting properly and would therefore overheat since they could not dissipate the heat to the valve seat. The car now started and idled, but it was clear driving home that the engine was not running properly. Naturally Jarls couldn’t say how long I could drive the car before bits of the valves or valve seats started breaking off and falling into the engine and they advised me to have it rebuilt before it self destructed.

There is no point having an expensive cult car like an E30 M3 if it is not running properly and the engine is a ticking time bomb, so I bit the bullet and booked it in for an engine rebuild. When they took the head off, they could see that the valves had hit the tops of the pistons, that the valves were now bent and the valve guides were completely worn out due to the bent valves. So this explained all my problems. It seemed that the workshop in England hadn’t set the motor up properly when they installed the Shrick cams, and Sten was pretty surprised at the short cuts that had been taken with the motor rebuild.

Clearly this was going to be a fairly big job, since the head needed to be rebuilt completely, and at a minimum I would need new pistons with deeper pockets so the valves would never hit the pistons again. Fortunately the Shrick camshafts were fine and the block didn’t need to be bored up to the next size. However Sten advised me that it would be pretty foolish not to replace the con-rods, the bearings, to have the oil pump rebuilt, and all seals and gaskets replaced etc, etc, and I also agreed. So I gave them the go-ahead to rebuild it as they saw fit. I had complete confidence in their workmanship, judgement and expertise. I told them that I wanted it to be done properly, since this is a car I expect to own for a long time, but I also had a tight budget. When talking to them, I really got the feeling that they do a quality job and don’t cut corners. I have the impression that there are no halfway measures – they will do it right, or they wont do it at all.

After the summer of 2007 the car was ready and I picked it up. They told me they had used the finest parts money could buy, which included special Alpina pistons with deep valve pockets. The instructions were to drive it for 1000 km after which they would change the oil and adjust the valves, then it would be a good idea to have the car checked on the rolling road of TS motorsport to make sure it wasn’t running too rich or lean (since the car has no lambda control). My only concern was that I had to have the car inspected at the bilsyn 3 days after I picked it up from having the engine rebuilt. Fortunately it passed with flying colours even though it had only done about 300 km. Subsequently I had the valves adjusted, oil changed by Jarls and went to TS motorsport. That was certainly worth the effort, since the car was running lean. After the adjustments, the car was putting out 223.5 hp at 7000 rpm and 251.7 Nm at just under 5000 rpm. All in all a very good result for a motor with the early head, no porting and stock intake system with only the 46 mm throttle bodies. I have now put about 2000 km on the engine and it is running perfectly, starts first time, idles great and is an absolute joy to drive.

The customer service I have experienced from Jarls has been top notch. They have been extremely friendly and accommodating. Walking around the show room with Martin and looking at his track day/racing E30 touring, hearing him start his racing Viper, looking at the fantastic Alpina 6 series from the 1980s, and seeing the valve shims taken out of the latest V10 powered M5 after its first valve adjustment, it is clear that they really know what they are doing and that they love cars, and in particular BMW and Alpina. It has been a pleasure dealing with them, and they will certainly be servicing and improving my car in the future.

Jarls location is just outside of Helsingborg and is very easy to drive to. They can loan you a car if need be, which makes life easy. Another really good thing is that they are open until 18.00, which makes it easy to get there before they close. I always pay with credit card, which is really easy and saves me having to get Swedish Kroner etc.

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