MNGSX
20+ Year Contributor
- 2,533
- 25
- Mar 30, 2003
-
Bloomington,
Minnesota
I'm sure I'm going with a garret T3/T4 60 Trim.
A 50 Trim is an excellent turbo. I will be running higher boost and higher octane. If a 50 trim is one of the best all around pump gas compressors I'm betting that a 60 trim would be the best all around alcohol compressor.
I've got the manifold, o2 and external WG figured out.
It will be ethanol not methanol. It is'nt as demanding and detrimental to fuel system components. It does'nt attack polymers anywhere near as bad as methanol. I have an ecu and wideband o2 picked out. I am some what certain as to injector sizing. The A/F for this stuff is around 9:1 so much larger injectors are needed than a similar race gas engine. I'll likely use bosch 160lb hr just to be on the safe side. The system will be less dependant on high fuel pressure to provide flow and I can keep the injector duty cycle low.
I wil be starting at 85% ethanol 15% gas ~105. Straight ethanol is 115 octane. The gas helps with cold starts. I've looked at college engineering projects for how they solve cold start issues. Some have really rich cold start via the ecu. Some use timing tricks.
There are some other issues to using the stuff like potential cylinder wasdown. So you would need to have an idle on the lean side but with alot of cold start enrichment. You also burn more of the stuff so milage goes down.
There are pros too. Lower cc temps and higher octane are just two. You also don't have to ride as close to the ragged edge of timing and a/f when tuning for power like with gas. Running a bit richer with a cooler fuel should do wonders for keeping the piston tops cool.
I guess I'm looking for info from anyone who has built a DSM for ethanol. I have regional availability and supplier contacts for the fuel which makes it much more umm... financially attractive than race fuel.
You can do a web search on ethanol racing if you have never seen it used for that. Here is one site.
http://www.ethanol.org/racing/e_racing_resources.html
I am talking to some v-8, drag and circle track ppl who use it. Alot of these guys ARE making big power on the stuff.
While I wait for inteligent responses here I will continue my www dragnet for ethanol fueled racing vehicle tech. I have yet to see a TC'd import of any kind on the stuff. So I though I'd ask here for people who are/have applied this to a 4g63.
Thanks in advance!
A 50 Trim is an excellent turbo. I will be running higher boost and higher octane. If a 50 trim is one of the best all around pump gas compressors I'm betting that a 60 trim would be the best all around alcohol compressor.
I've got the manifold, o2 and external WG figured out.
It will be ethanol not methanol. It is'nt as demanding and detrimental to fuel system components. It does'nt attack polymers anywhere near as bad as methanol. I have an ecu and wideband o2 picked out. I am some what certain as to injector sizing. The A/F for this stuff is around 9:1 so much larger injectors are needed than a similar race gas engine. I'll likely use bosch 160lb hr just to be on the safe side. The system will be less dependant on high fuel pressure to provide flow and I can keep the injector duty cycle low.
I wil be starting at 85% ethanol 15% gas ~105. Straight ethanol is 115 octane. The gas helps with cold starts. I've looked at college engineering projects for how they solve cold start issues. Some have really rich cold start via the ecu. Some use timing tricks.
There are some other issues to using the stuff like potential cylinder wasdown. So you would need to have an idle on the lean side but with alot of cold start enrichment. You also burn more of the stuff so milage goes down.
There are pros too. Lower cc temps and higher octane are just two. You also don't have to ride as close to the ragged edge of timing and a/f when tuning for power like with gas. Running a bit richer with a cooler fuel should do wonders for keeping the piston tops cool.
I guess I'm looking for info from anyone who has built a DSM for ethanol. I have regional availability and supplier contacts for the fuel which makes it much more umm... financially attractive than race fuel.
You can do a web search on ethanol racing if you have never seen it used for that. Here is one site.
http://www.ethanol.org/racing/e_racing_resources.html
I am talking to some v-8, drag and circle track ppl who use it. Alot of these guys ARE making big power on the stuff.
While I wait for inteligent responses here I will continue my www dragnet for ethanol fueled racing vehicle tech. I have yet to see a TC'd import of any kind on the stuff. So I though I'd ask here for people who are/have applied this to a 4g63.
Thanks in advance!
That poor poor automatic transmission. It's getting used and abused.