Turbo problem??
Discussion
hey guys!! i bort a automatic 2000 Suabaru Legacy B4 RSK from Japan 6 days ago..... for the past 5 and a half days its been AWESOME!! hasnt missed a beat! i havnt ragged it by any means and im running it on he highest RON i can find (i know they are configured for 104RON in Japan, and all i can get is 100) so iv babyd it cuz i know they like to detinate under high stress with low octane fuel, iv been giving it lots of time to "cool" with the turbo timer after driving!
im sure you are aware it has sequential turbos that from my testing kicks in at about 2500rpm and 5000rpm on the test drive the turbos worked SWEET! especially the bigger one at 5000 really threw you back. i went to overtake a vehicle on my way home today and thort ill give it some beans, at 5000 revs when i was expecting a punch in the face as it boosted up, nothing really happend there was a slight boost in speed but NOTHING like it has been! i got home and let the engine chill out for a while and took it out again and its still weak!
the first turbo works great, but this other one is really twisting my mellon! ANY IDEAS WAT IT COULD BE?? any help would really be apreciated!!
Chris!!
im sure you are aware it has sequential turbos that from my testing kicks in at about 2500rpm and 5000rpm on the test drive the turbos worked SWEET! especially the bigger one at 5000 really threw you back. i went to overtake a vehicle on my way home today and thort ill give it some beans, at 5000 revs when i was expecting a punch in the face as it boosted up, nothing really happend there was a slight boost in speed but NOTHING like it has been! i got home and let the engine chill out for a while and took it out again and its still weak!
the first turbo works great, but this other one is really twisting my mellon! ANY IDEAS WAT IT COULD BE?? any help would really be apreciated!!
Chris!!
http://www.maxol.ie/maxol-bioethanol-e85.html
Whats ludicrous about E85 Biofuel?
Just in case you miss it, dont use it in your car, the fuel system may not be compatible.
Whats ludicrous about E85 Biofuel?
Just in case you miss it, dont use it in your car, the fuel system may not be compatible.
goosie208 said:
haha its plastered all over the the forums iv been looking on.. and as for the 100ron its actually 99.4 its an ethonol blend and the only fuel they sell in Maxol garages in Ireland, they do an even more ludarcus one which is baisicly dragster fuel but im too afraid of it!!
Just goes to show how much BS is on a lot of forums then.And there is nothing available at the pumps anywhere in the UK that even remotely comes close to dragster fuel. Unless its a very odd dragster ??
yeah i spose there is alot of s
te out there but its hard to tell unless you know your st like!! and as for the E85 biofuel, my viewing of it as ludacrus is valid, a guy i know put it in his evo8 and his engine blew the same day. i heard its got a crazy 105ron rating, but as you say most cars cant run on 105!
anyway as fun as talking octane ratings is MY TURBOS STILL FOOOOOKED!
te out there but its hard to tell unless you know your st like!! and as for the E85 biofuel, my viewing of it as ludacrus is valid, a guy i know put it in his evo8 and his engine blew the same day. i heard its got a crazy 105ron rating, but as you say most cars cant run on 105!anyway as fun as talking octane ratings is MY TURBOS STILL FOOOOOKED!
goosie208 said:
yeah i spose there is alot of ste out there but its hard to tell unless you know your st like!! and as for the E85 biofuel, my viewing of it as ludacrus is valid, a guy i know put it in his evo8 and his engine blew the same day. i heard its got a crazy 105ron rating, but as you say most cars cant run on 105!
anyway as fun as talking octane ratings is MY TURBOS STILL FOOOOOKED!
The fuel isn't ludicrous as you put ut. But clearly you friend is an idiot for trying to run his car on a fuel totally unsuitable for his vehicle. Suppose he has tried diesel at some point too ? It's almost equally as stupid, although it wud probably have been cheaper.te out there but its hard to tell unless you know your st like!! and as for the E85 biofuel, my viewing of it as ludacrus is valid, a guy i know put it in his evo8 and his engine blew the same day. i heard its got a crazy 105ron rating, but as you say most cars cant run on 105!anyway as fun as talking octane ratings is MY TURBOS STILL FOOOOOKED!
I never said the cars can't run 105, they can and would do very safely on 105 ron PETROL. Notice a rather important word there.
goosie208 said:
yeah i spose there is alot of ste out there but its hard to tell unless you know your st like!! and as for the E85 biofuel, my viewing of it as ludacrus is valid, a guy i know put it in his evo8 and his engine blew the same day. i heard its got a crazy 105ron rating, but as you say most cars cant run on 105!
anyway as fun as talking octane ratings is MY TURBOS STILL FOOOOOKED!
to run biofuel u have to change a load of components. also biofuel is very hard to start a car on so you still need normal fuel to get u started. te out there but its hard to tell unless you know your st like!! and as for the E85 biofuel, my viewing of it as ludacrus is valid, a guy i know put it in his evo8 and his engine blew the same day. i heard its got a crazy 105ron rating, but as you say most cars cant run on 105!anyway as fun as talking octane ratings is MY TURBOS STILL FOOOOOKED!
fastcars_hardy said:
goosie208 said:
yeah i spose there is alot of ste out there but its hard to tell unless you know your st like!! and as for the E85 biofuel, my viewing of it as ludacrus is valid, a guy i know put it in his evo8 and his engine blew the same day. i heard its got a crazy 105ron rating, but as you say most cars cant run on 105!
anyway as fun as talking octane ratings is MY TURBOS STILL FOOOOOKED!
to run biofuel u have to change a load of components. also biofuel is very hard to start a car on so you still need normal fuel to get u started. te out there but its hard to tell unless you know your st like!! and as for the E85 biofuel, my viewing of it as ludacrus is valid, a guy i know put it in his evo8 and his engine blew the same day. i heard its got a crazy 105ron rating, but as you say most cars cant run on 105!anyway as fun as talking octane ratings is MY TURBOS STILL FOOOOOKED!
Obviously the setup must be designed and tuned to use the fuel though. Trying to run a petrol car on it without proper retuning is as stupid as trying to use diesel.
could be your waste gate flap has disapeared/melted thus giving you lower boost on the second turbo, the high octane fuel causes high exhaust gas temps same goes for low octane fuel being premeturally detonated so might off caused some damage somewhere.
Edited by skid-mark on Wednesday 3rd February 23:20
well to run an engine on high octane requires a higher compression ratio this puts the cylinder under more pressure causing higher temps of the cylinder and exhaust gas,
putting higher octane fuel into a car with standard compression is just going to eliminate knocking/pinking but your not going to gain any more power from it unless the compression is higher, it deepends what this engine has been set up to run on.
putting higher octane fuel into a car with standard compression is just going to eliminate knocking/pinking but your not going to gain any more power from it unless the compression is higher, it deepends what this engine has been set up to run on.
skid-mark said:
well to run an engine on high octane requires a higher compression ratio this puts the cylinder under more pressure causing higher temps of the cylinder and exhaust gas,
putting higher octane fuel into a car with standard compression is just going to eliminate knocking/pinking but your not going to gain any more power from it unless the compression is higher, it deepends what this engine has been set up to run on.
nonsense.putting higher octane fuel into a car with standard compression is just going to eliminate knocking/pinking but your not going to gain any more power from it unless the compression is higher, it deepends what this engine has been set up to run on.
My lawnmower could run on high octane fuel if I filled it up, and it certainly isnt high compression.
A higher octane fuel may allow you to use a higher CR making a more efficient engine, but it certainly is not required.
And putting it in a std engine certainly will not cause higher EGT's, if anything likely lower, but marginal difference.
And you will find that regardless of fuel used, CR used, whatever used, similar EGT and chamber temps can be achieved with most fuels unless delving into real exotica
stevieturbo said:
skid-mark said:
well to run an engine on high octane requires a higher compression ratio this puts the cylinder under more pressure causing higher temps of the cylinder and exhaust gas,
putting higher octane fuel into a car with standard compression is just going to eliminate knocking/pinking but your not going to gain any more power from it unless the compression is higher, it deepends what this engine has been set up to run on.
nonsense.putting higher octane fuel into a car with standard compression is just going to eliminate knocking/pinking but your not going to gain any more power from it unless the compression is higher, it deepends what this engine has been set up to run on.
My lawnmower could run on high octane fuel if I filled it up, and it certainly isnt high compression.
A higher octane fuel may allow you to use a higher CR making a more efficient engine, but it certainly is not required.
And putting it in a std engine certainly will not cause higher EGT's, if anything likely lower, but marginal difference.
And you will find that regardless of fuel used, CR used, whatever used, similar EGT and chamber temps can be achieved with most fuels unless delving into real exotica
high octane fuels work best under higher compression thats more or less what i was getting at being that his car is a turbo probably running a lower compression ratio but running it on high octane fuel is not going to do the car any favours in the long run with out being set up properly for it, yes it will run but for how long?
skid-mark said:
being that his car is a turbo probably running a lower compression ratio but running it on high octane fuel is not going to do the car any favours in the long run with out being set up properly for it, yes it will run but for how long?
Lower static CR probably, but under boost the CR will obviously be raised. Engines running high boost usually need high octane fuel.Mr2Mike said:
skid-mark said:
being that his car is a turbo probably running a lower compression ratio but running it on high octane fuel is not going to do the car any favours in the long run with out being set up properly for it, yes it will run but for how long?
Lower static CR probably, but under boost the CR will obviously be raised. Engines running high boost usually need high octane fuel.
i agree but if your not running high boost running on higher octane fuel allows the fuel to burn at a slower rate, some turners will say with the engine firing at the wrong time at high revs the fuel can still be burning well after the power stroke and in to the exhaust stroke, thus causing heat build up into the exhaust valve area and into the manifold where the turbo takes the full force of it causing stresses on standard non modified parts.Gassing Station | Engines & Drivetrain | Top of Page | What's New | My Stuff