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bm0p700f

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About bm0p700f

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    Chief Member

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  • Website URL
    http://www.thecycleclinic.co.uk

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  • Location
    Suffolk
  • Interests
    MTB/road bikes, cars and watching telly.
  • Occupation
    Bike Mechanic/teacher

Garage

  • Garage
    BMW E34 530i (1988)

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  1. Part 19. Requited for the engine build. https://www.realoem.com/bmw/enUS/showparts?id=HC52-EUR-04-1988-E34-BMW-530i&diagId=11_1187 I don't think the dealer can help. Its been on order for 7 months or more.
  2. Finally after a 6 month wait the pistons have arrived. I am about to cycle them over to the engine builder. The build can commence.
  3. Well I am excited now. After months of waiting the pistons are ready. I have just paid the import taxes bill. delivery will be on the 4th and Radco engineering can finally assemble the new engine. I am hoping for 260hp. Not sure exactly what the 6 branch manifold will do with higher airflow. it cant improve flow if the intake side gets maxed out. After the engine the engine management can get attention and then the a respray and interior refresh. It might be ready for the summer 2023. Battery is currently isolated as I am not using it through winter. Got a range rover for that.
  4. An exhaust manifold does not work on every engine setup. It really depends on the engine. With the s14 the manifold possibly allowed flow reversion or slowed exhaust gas velocity to create a restriction. Flow on the intake side would need to increase so the exhaust gas velocity increases. In mine the I take side flows well due to the later m30 design but the exhaust side had not changed and must have been a restriction. So the exhaust system uncorked it. It does not work that way always. Hence the mixed experiences. Those mixed experiences have a cause. I just want to understand it all. Engine management is key. I do wonder now how powerful the m30b35 will be,if a lowly b30 can mange 209hp.
  5. It's also nice to know a 530i produce as much power as an e34 535i.
  6. Its conclusive to me and I only have to convince myself One can calculate power output pretty well from acceleration data. 210hp matches what is predicted from timed acceleration data. The car is quicker for sure than it was before the exhaust change. I know this. Its about 0.8 quicker secs to 60. There is a 1 sec improvement in the 30 to 70 mph 3rd gear time as well. That has not come from nowhere. On my old e28 I got 10hp with the m20 fritz system and the e30 325i exhaust manifold . that engine though was down on power. It had issues I never resolved. the exhaust manifold is likely to make the biggest difference. I visited Emerald to book the car in for there engine management system in February. That's the earliest they can supply and fit one. Hopefully the new engine will be in by then. If it is not the new ecu will be wired in anyway as if I don't I can see this project just getting pushed back and back. If the car has to be mapped twice so be it. The reason for the change in engine management is the fueling. I knew it was off and the exhaust system is likely to be the cause. The afm is also another culprit. It probably needs opening up and the spring tension increasing but after 160000 miles the Carbon track is most likely wearing and the new afm is the cost of a Emerald ECU and this can be mapped for the new engine without messing with the sealed AFM as they are on e34's. The new engine will make matters worse and the chip I have will not be perfect with a 33 year old afm that's needs tweeking and with a engine that's close to alpina spec but also different ( higher cr for one). Trust me the exhaust system has made a difference. I know this car well.
  7. Been to Clive Astwood tuning for a power run. Bear in mind the m30b30 engine has 188hp @5800 rpm (book) and 192 ft.lb @4000 rpm. With the fritz exhaust manifold and system it makes 209hp @6000 rpm and 191 ft.lb torque @4484 rpm. so fritz claims are correct. It works. The car also accelerates in a timed way like it has 210 hp. So that's what I predicted it should have. However it is running lean at various points. That needs to be corrected. So next step is engine management before the new engine goes in. I want to have a file for this engine as I will probably keep it.
  8. bm0p700f

    Exhaust options.

    For mark. Been to Clive Attowe tuning for a power run. Bear in mind the m30b30 engine has 188hp @5800 rpm (book) and 192 ft.lb @4000 rpm. With the fritz exhaust manifold and system it makes 209hp @6077 rpm and 191 ft.lb torque @4484 rpm. wheel horsepower figure is also good giving 165hp @5893 rpm. Run down is funny thing. So peak power has moved up to approximately 6000 rpm. so fritz claims are correct. It works. The car also accelerates in a timed way like it has 210 hp. So that's what I predicted it should have. However it is running lean at various points. That needs to be corrected.
  9. bm0p700f

    new guy

    Although if you snuck a m30b34 in there no one would mind (I would).
  10. bm0p700f

    Range rover

    It broke again. Rocker cover gaskets had leaked oil over time over the spark plugs causing a misfire. Also a possible faulty maf. The engine when running had a peculiar fault in that the coolant temp would drop then rise. I never thought much of it but it is blatantly the fan not turning off. Well guess what's been found. The fan swith wiring has shorted so the fan is ways on. This is old fault as the exposed wire is corroded. So a loom repair is required as the burnt wire goes alway back in the bulkhead. Fecking cars. Viscous fan couplings, that what we need. At least that's the last of the catchup maintenence. It still needs the dash pixels sorting. Given the price of petrol now I am.not sure which is cheaper filling it up or fixing it.
  11. bm0p700f

    TATechnix suspension - Just how bad is it?

    Oe suspension is pretty good. However the front on mine ride a bit higher than I'd like. I did have eibach springs and Bilstien dampers on an e28 and that car handled very well however I can't fault the oe suspension recently fitted to the 530i either (springs, dampers, top mounts....) I don't know how wide a tyre you can fit. This is the kit I have thinking about. However what exactly am I trying to improve. https://www.schmiedmann.com/en/bmw-E34/1976453-new?product=E90200030522
  12. bm0p700f

    Exhaust options.

    Mark have you found something yet?
  13. New wheels well old ones refurbished. Oz route. Tyres 225/55/R16 Conti Contact 2. There is more secure handling now. The tyres that came of where 12 years old. I also changed the intake boot between the AFM and the inlet manifold as it had split. The car feels quicker as a result. Also I have timed the 0 to 60mph. Book for 0 to 100kph is 8.6sec. Timed acceleration is 7.4 secs on a cold damp road. It is possible to get an estimation of horsepower from this. I have done a few runs in wet and dry conditions and the times are consistant with a power output of about 200hp from the current m30b30 engine. On the old tyres the best time was 8.2 sec but with the split boot. I hope to get it on rollers soon. The exhaust I have maybe doing something useful. I know it accelerating more quickly than before the exhaust change. I wish I did some tests before. On a warm dry road it should get to 60mph in 7 secs. It's alot quicker than I thought. In fact t it has never felt as good. The car has also got to 160000 miles now.
  14. That's the sort of thing the engine builder normally works on. There was a car on it side in some sort of stand well a shell really. He builds historic race cars/engines.
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