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Old 02-04-2010, 04:08 PM
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BAD300 BAD300 is offline
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Join Date: Feb 2010
Location: Melbourne, Australia
Posts: 510
WOW thanks guys for all your feedback

Quote:
Originally Posted by Joreto View Post
Yes LPG has higher octane and it's common to advance the timing a bit when running LPG. Currently a friend converted his turbo E36 328i to LPG, on petrol it runs @ 1 bar but on LPG it starts leaning out after 0.5, so now his waiting for bigger LPG injectors.
When engine is rebuilt, I will be putting in larger LPG jets prior to dyno! I believe the orig' owner retarded timing, as you do when boosting on petrol, & perhaps leaned out the 2 cylinders & caused detonation?

Quote:
Originally Posted by Joreto View Post
If you decide to stick with LPG, than I recommend you convert to liquid injected LPG.
I know of people having huge success with the mixer fed LPG systems. It's just the AFR's, tuning that's appears difficult Once I have the engine running again & have run it in, tuning will be my main priority. Thanks for tip on ext header btw!

Quote:
Originally Posted by 400Eric View Post
LPG has an octane rating of 110 (R+M/2 method. This means you can run way more boost before detonation occurs (provided the AFR is correct). That's why I said this car is cool.
Regards, Eric
The higher octane & detonation resistant properties of LPG is what interests me most although, you do have to push through more LPG due to the gas having less energy, as mentioned prior by JayRash This aspect along with difficulty in tuning, is the main trade off you need to consider I guess

Quote:
Originally Posted by c280nz View Post
yea convert to efi like turboe320 says,
am i correct looking at your pics that only a few of the cylinders look to have leaned out, (the middle one?)

welcome to the forum and tuning forced benz's, there arn't many that do it, but that makes it so much cooler
Yes, 2 cylinders copped it good! Even the bores have suffered rust damage. You can see where water has flowed down the cylinders There is also a very strange lip about 1 1/2 inches down 2 bores. Fug knows what the seller has done to this poor engine Heard about Roman, will definately catch up with him soon

Quote:
Originally Posted by 400Eric View Post
My vote is still for the LPG. Plus he has already indicated that he basically wants to finish and improve upon what has already been started. It would definitely be the least expensive way to go and he is the one after all, paying for the project.
Regards, Eric
Precisely! Hit the nail on the head I'm sticking with LPG as car was already converted when I purchased it The buggered engine was a bonus I wasn't expecting yeehar!

Quote:
Originally Posted by Joreto View Post
P.S. I don't think this LPG system will be able to coupe with the boost levels your aiming at 20-25 psi. Evaporators/mixers have e hp/kw rating, do you know the rating of yours, you might need to upgrade or even add another depending on the power your aiming at ?
Concidering the work already done to car, I'd like to get @ least 18psi. Thanks for heads up! I am probably needing new evaporator anyway due to rusted water inlet/outlet pipes.

Quote:
Originally Posted by MAG58 View Post
Issue: We live in the cornbelt. E85 is cheap. I don't even think he lives in the country, much less Indiana. E85 not so cheap, perhaps not available.
Yep! I live in Australia. E85 is not available here yet. We have E10 & it is alot more expensive than LPG (well over double). This was to support our sugar industry down here. In hindsight, I probably wouldn't bother with conversion myself although, our Gov' were offering 80%+ rebate if we did conversion I've become interested since the purchase so, wth?
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um.....why have men got nipples

Last edited by BAD300; 02-04-2010 at 05:05 PM.
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