Re: Turbo Brick
Posted: 22 Feb 2011 10:27 am
Also think detonation is your biggest enemy. Especially with the limited options you have when using a renix unit.
Maybe a low budget diy water/meth injection kit might be a good idea. Maybe use a intank pump from a 240/740 or an airpump but those can be expensive. Cold start injector or just a normal injector. Hobbs switch or map sensor to swith it on and off.
If there is a petrol station near you which sells E85 that would be great!
Talked to a guy from Sweden who turbocharged his B14 (MS as spark) also grenaded his pistons since he used a very agressive (n/a) spark table. Had similar damage to one or more pistons as you had. Though he did drive another 1000+ klm including a trackday or two. Engine sounded horrible, like it would/could explode within seconds. Still running strong despite of the damage. Has been swapped for something nicer.
Some people say the oiling of a Volvo B14 piston is a lot better than in the R5 engines, can´t remember if this was comparing a n/a B14 to a n/a or turbo R5 engine.
Pistons and rods should handle quite some power. Head design is as ugly as it can get in almost all the different engines. It´s just that some are slightly less crappy.
Thing with these differences is that it's all hear say. For the better and the worse.
The B14 cam also should work pretty nice with a turbocharger, quite a hot cam for a turbo engine. Much better than a stock R5 turbo cam.
Because of the head design and especially the combustionchamber they are sensitive to blowing out a headgasket. They also show some strange piston and bore wear and can get pistonslap because of this.
Think it's a really cool idea. The higher cr should also make it a lot more fuel efficient. Bigger turbine might be a good idea to keep the exhaust back pressure as wel as egt's down.
iirc Haynes or another of those publishers has a tuning guide which is helpful in tuning A-series engines. The book includes some interesting info on the minimum required diameter of inlet and exhaust valves/channals etc. The A-series does look quite a bit like a B14 although the B14 (bottom) should be considerably stronger.
Maybe a low budget diy water/meth injection kit might be a good idea. Maybe use a intank pump from a 240/740 or an airpump but those can be expensive. Cold start injector or just a normal injector. Hobbs switch or map sensor to swith it on and off.
If there is a petrol station near you which sells E85 that would be great!
Talked to a guy from Sweden who turbocharged his B14 (MS as spark) also grenaded his pistons since he used a very agressive (n/a) spark table. Had similar damage to one or more pistons as you had. Though he did drive another 1000+ klm including a trackday or two. Engine sounded horrible, like it would/could explode within seconds. Still running strong despite of the damage. Has been swapped for something nicer.
Some people say the oiling of a Volvo B14 piston is a lot better than in the R5 engines, can´t remember if this was comparing a n/a B14 to a n/a or turbo R5 engine.
Pistons and rods should handle quite some power. Head design is as ugly as it can get in almost all the different engines. It´s just that some are slightly less crappy.
Thing with these differences is that it's all hear say. For the better and the worse.
The B14 cam also should work pretty nice with a turbocharger, quite a hot cam for a turbo engine. Much better than a stock R5 turbo cam.
Because of the head design and especially the combustionchamber they are sensitive to blowing out a headgasket. They also show some strange piston and bore wear and can get pistonslap because of this.
Think it's a really cool idea. The higher cr should also make it a lot more fuel efficient. Bigger turbine might be a good idea to keep the exhaust back pressure as wel as egt's down.
iirc Haynes or another of those publishers has a tuning guide which is helpful in tuning A-series engines. The book includes some interesting info on the minimum required diameter of inlet and exhaust valves/channals etc. The A-series does look quite a bit like a B14 although the B14 (bottom) should be considerably stronger.

