View Full Version : turbo issues
fitted my new turbo just took it down the road and it doent seem to be boosting properly only giving .2 bar first and second gear but the car was very low on fuel and ran out on the second run are there any things i should look for on the basic side ? apart from more fuel lol
thanks for any help
Sorry I could not answer your call mate, was out at dinner.
Sounds like the wastegate might be stuck open. If you remove the pipe to the actuator it might give a bit more but then, if it is stuck it wont make a difference. You need to have a look at the pushrod to the wastegate and see if its moving freely.
just found the pipe from the turbo to the intercooler i think has a pipe off it that runs to the dump valve has split away completely think this might be the prob?
Almost certainly mate. When I bought my Q4 it came with a new one of those in the boot for me to fit so probably a common place to split.
are there any t-pieces off the shelf i can get to fit in side the boost pipe ?
There probably is but it depends where it split.
You will need to take the pipe off and have a good look at it then search like mad on demon tweeks for something to fit :(
it has split right where the pipe runs off for the dump valve its actually the pipe for the dump valve that has come off
Maybe a whole new hose then. I have a feeling its about ?40.
think i have found a place where i can get a alloy piece to fit in with a take off for the dump valve
Mmm, were you getting any funny (hissing?) noises?
There's loads of places sell generic pipes and jointers but they're expensive, spending a bit of time searching will often yield results.
But usually Demon Tweeks have something, as Jack said.
wrinx
well hopefully these guys can solve the problem and i could hear the turbo spinning up and when i change gear there was alot of noise but no go !!! ile post a pic when i get home of the damaged pipe !! looks like its ?16 plus postage so not to bad
arjunior45
26-05-09, 10:34
the hole {oem} tube is just 16 pounds or just the 'T' piece?
waiting for the pics.
the ally t-piece is ?16 just got to confirm the measurements of the pipe when i get home and the dump valve pipe, looks like ile have to cut the original boost pipe and remove a section to fit this in so it fits properly. the original pipe from alfa is ?90 VAT !!!!!
the original pipe from alfa is ?90 VAT !!!!!
:eek::eek: Slightly more than I thought then! :frown:
he said i could have 10% off tho !!!!! lol
arjunior45
26-05-09, 11:00
the dump valve pipe is at 25mm. The other big one I do not know.
well it cost 28.50 including postage which wasnt to bad including to big jubilee clips so hopefully will fit it later this week. Jack will i be ok if i send the pics to your phone as i cat upload them for some reason ?
No worries, send them over :)
arjunior45
27-05-09, 11:07
well it cost 28.50 including postage which wasnt to bad including to big jubilee clips so hopefully will fit it later this week. Jack will i be ok if i send the pics to your phone as i cat upload them for some reason ?
what about the dimension-diameter of the big bore part? Did you measure it? How much is it?
Here is a pic that sub sent to me.
Bit of bathroom sealant would see that alright :lol:
wrinx
well alfa being alfa have made a pipe that is smaller in the middle than it is at each end !!!! 2.5 inches at each end and 2inches in the middle bloody T piece is to big !!!! so orderd a complete fitting alloy get with pipes and elbows going to change the lot !!1
arjunior45
31-05-09, 12:26
I'd like to see a picture, when is finished, mostly from the part that goes to the 'end' of the oem tube {towards the inlet manifold}. That's the hardest 'curve' to follow - I believe.
fitted all the intercooler pipework didnt take long but now have water leaking out the back of the engine the hose on the back has been changed already. Any ideas what it could be ?
arjunior45
03-06-09, 06:54
have a look at the hoses or the plastic connector for the heater.
Mine {plastic connector} was gone and I there was a leak until it cracked completely and lost all the coolant in a blink of eye.
Or the small tube from the coolant expansion tank to the 'hose on the back'. This one was also burned from the egr's tube heat.
If you had already replace the big hose {with the T - piece} I thing there are no other hoses left on the back of the engine, apart the other two mentioned above.
have you got a diagram of the pipes on the back the engine ?
arjunior45
03-06-09, 15:37
have you got a diagram of the pipes on the back the engine ?
sorry I do not, but maybe you can find it in the q4 engine workshop manual.
see here http://www.berlinasportivo.org/Technical/q4manual/Q4engine.pdf
arjunior45
03-06-09, 15:55
can this one help you?
Juan AR155Q4
03-06-09, 16:54
Nick,
Is that your engine?
arjunior45
03-06-09, 18:52
Nick,
Is that your engine?
No, and I do not recall where this picture is from. It's from a small collection of pictures {5 or 6 if I remember well} I have concerning a mod to the oil sump {?} to keep more oil to the bottom of it, especially during hard cornering.
It's a 'mod' like the one from the good old GTA {the Giuglia one, not the 155} which I made long time ago in my 'scalino'.
If you are interested I can post more pictures of this 'mod' {in another topic of coarse}.
thanks for the pics but i have now found the problem its not a water pipe but i have a leaking core plug !!!!!!!!! so going to order some tomrrow and get it changed not a nice job !!!
also i sent jack a picture of he intake system so hopefuly he might post it for me.
Only got the one here mate:
http://forum.berlinasportivo.org/showpost.php?p=13056&postcount=20
Speak to you tomorrow.
EDIT, just got it:
http://www.cloverleaf4.co.uk/images/uploads/14982.jpg
cheers jack much appreciated :)
arjunior45
04-06-09, 10:16
EDIT, just got it:
http://www.cloverleaf4.co.uk/images/uploads/14982.jpg
@sub
you bought all these tubes {alu and the rest} for just 28 sterlings???
no the T piece was 28 pound the rest of the kit was 70 pound do about 100 pounds all together and i still have alot of pipes and connectors left for the rest of the pipes if there big enough
Juan AR155Q4
04-06-09, 13:18
No, and I do not recall where this picture is from. It's from a small collection of pictures {5 or 6 if I remember well} I have concerning a mod to the oil sump {?} to keep more oil to the bottom of it, especially during hard cornering.
It's a 'mod' like the one from the good old GTA {the Giuglia one, not the 155} which I made long time ago in my 'scalino'.
If you are interested I can post more pictures of this 'mod' {in another topic of coarse}.
Would be great if you could!!
Something else regarding this picture, can be the sump took apart without removing the gearbox? Are the sump?s bolt there accessible?
arjunior45
04-06-09, 17:17
Would be great if you could!!
Something else regarding this picture, can be the sump took apart without removing the gearbox? Are the sump?s bolt there accessible?
ok I'll post the pictures soon.
Do not know about the gearbox. Once I was told that it is possible to take the sump apart but that's all I can tell.
Edit: I was going to answer the question on sumps, but the 'grale has a two piece sump which is different to the Q4s (IIRC).
:tapedshut::tapedshut::tapedshut:
The Q4 has the main sump bolted to the block and then another cover on the very bottom
arjunior45
05-06-09, 09:18
well, these are the pictures.
If anyone think they can be usefull in any way, it's just fine with me!
Did not find the one from the Alfa 105 series, too many cds to search, but that's the idea.
jimnielsen
05-06-09, 11:41
thats a very interesting approach with the sump, Nick... have you tried it out? Do you have any other pictures?
jimn~
Juan AR155Q4
05-06-09, 12:00
Thanks Nick!!!
arjunior45
05-06-09, 12:22
No Jim.
I've tried the corresponding one in my series '105' Giulia GT engines and had no problems at all.
You see, it was a mod from the legendary 'GTA' {do not know who first thought of it} and a must for race track use. Keeps more oil quantity at the bottom of the engine and oil pump practically never suck air {or vapors}, even at very hard corners and with the inner wheels up in the air.
You are using the Q4 for race, so go for it.
You could also polish 'like mirror' all the surfaces that are in contact with the oil drainage. A such polished surface keeps less oil on it. Can be done with the rods for example but not only.
arjunior45
05-06-09, 12:23
Thanks Nick!!!
welcome
Powered by vBulletin® Version 4.2.5 Copyright © 2024 vBulletin Solutions Inc. All rights reserved.