I'm preparing my engine for bigger turbo with more flow and a bit more boost and I want to wire-ring my engine but I've heard that it's not recommended to use wire-rings on engine without forged pistons.
Is it true and why?
Momentarily I'm not in position to buy them cause of lack of money but plan is to buy them till next year.
And I would like to also ask you guys which forged pistons would you recommend (I'm looking for CR of 7.8-7.6:1)?
Uno 1.3 Turbo tuning
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Yugo_Turbo
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Acki
Metall gasket for uno turbo? Where?
Punto Gt charger is smaller than the Uno racing charger.
I drove 1.2 Bar in allday use (stock 1.3 charger).
But I also drove 1.7 bar.
When you have enough mixture in the cilinder you have no problems with knocking and your gasket holds..
When you have knocking and the gasket holds something other will be damaged (piston, valves, what ever).
Punto Gt charger is smaller than the Uno racing charger.
I drove 1.2 Bar in allday use (stock 1.3 charger).
But I also drove 1.7 bar.
When you have enough mixture in the cilinder you have no problems with knocking and your gasket holds..
When you have knocking and the gasket holds something other will be damaged (piston, valves, what ever).
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Yugo_Turbo
Where?
Here in Serbia :)
Really, I didn't know that.
Whis turbo is Racing version using?
Unfortunatly,its immposible to find uno racing turbocharger over here.
No hard feelings but I think 1.7bars is way too much for stock IHI RHB5, it's just pushing inlet temp. upwards without significantly creating more airflow.
Thats my opinion and thats why I'm not going to use stock IHI.
Here in Serbia :)
Really, I didn't know that.
Whis turbo is Racing version using?
Unfortunatly,its immposible to find uno racing turbocharger over here.
No hard feelings but I think 1.7bars is way too much for stock IHI RHB5, it's just pushing inlet temp. upwards without significantly creating more airflow.
Thats my opinion and thats why I'm not going to use stock IHI.
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Guy Croft
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Some useful hints here:
http://guy-croft.com/viewtopic.php?t=23 ... t=corridon
Now that I can get NV gaskets with split fire ring I am not tied to doing those annoying and difficult wire-ring machining operations. That is what I would use in this case.
GC
http://guy-croft.com/viewtopic.php?t=23 ... t=corridon
Now that I can get NV gaskets with split fire ring I am not tied to doing those annoying and difficult wire-ring machining operations. That is what I would use in this case.
GC
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Acki
Yes 1.7 bar is too much for the stock charger.
Because of this I have bought a compressor wheel of a Subaru IHI charger which is 40mm (stock is 32mm, novitec big charger had 39mm).
This wheel make 0,3 bar more without any other changes on the charger.
I drove 1,2bar in allday use without problems (108kW with cat -> pressure drops down on higher revs because of the stock cat - 0,8 bar at 6000revs and 108kW there!).
When the engine is rebuilt (a spark plug burned down and destroyed the piston - to hot standard plugs... I learned more about this now)
I will try this compressor wheel on the new engine and I hope I get 170-180bhp.
Changes:
big throttle body 1.5 MPI -> 48mm - stock is 42mm
camshaft 1.5 MPI -> 9.8mm lift and 244‚° - stock is 8mm and 220‚°
5th injector about pressure switch
better clutch (technic clutch I think)
lightened flywheel
I hade the small Mk2 turbo intercooler installed.
The racing intercooler is ~ 5cm wider than the 1.3 intercooler.
The mk1 turbo intercooler is some cm's thicker than the mk2 intercooler and he has more pipes.
I will make you a picture.
I think when you make this think's you have a very fast uno in standard look :-)
Because of this I have bought a compressor wheel of a Subaru IHI charger which is 40mm (stock is 32mm, novitec big charger had 39mm).
This wheel make 0,3 bar more without any other changes on the charger.
I drove 1,2bar in allday use without problems (108kW with cat -> pressure drops down on higher revs because of the stock cat - 0,8 bar at 6000revs and 108kW there!).
When the engine is rebuilt (a spark plug burned down and destroyed the piston - to hot standard plugs... I learned more about this now)
I will try this compressor wheel on the new engine and I hope I get 170-180bhp.
Changes:
big throttle body 1.5 MPI -> 48mm - stock is 42mm
camshaft 1.5 MPI -> 9.8mm lift and 244‚° - stock is 8mm and 220‚°
5th injector about pressure switch
better clutch (technic clutch I think)
lightened flywheel
I hade the small Mk2 turbo intercooler installed.
The racing intercooler is ~ 5cm wider than the 1.3 intercooler.
The mk1 turbo intercooler is some cm's thicker than the mk2 intercooler and he has more pipes.
I will make you a picture.
I think when you make this think's you have a very fast uno in standard look :-)
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Yugo_Turbo
Sounds pretty immpresive.
Finding ANY Subaru part in Serbia is mightmare, especially turbo parts.
So I'll pass.
Plan is to use T25, MHI TD04-13(or 15) or some hybrid.
As I said, maximum of 1.5bar of boost.
For now I'm preparing engine for bigger turbo and bigger boost.
Head is being completelly prepared(by me) fully ported with 31/29 inlet ports and 29/27 exhaust ports, changed angle of inlet ports, racing valve guides,38.5 inlet valves fully modified(stem diameter shortened for 1mm,3angle cut,polished), stock 33.5mm modified(3angle cut, polished),valve seats(3angle cut).
Plan is to buy forged pistons and cause of that I'm thinking about o-ring, but more I'm thinking the least painless version is to use Nava head gasket with separate fire rings.
You're talking about N/A 1.5 camshaft.
Will it work ok?
Is overlap too big?
Another one question, is there any other Fiat/Lancia engine using same camshaft like uno 1.3 turbo.
I would like to, but I don't have enough knowledge to do that and the fact I'm not driving Uno but small Zastava Yugo with it's weak chasis.
thank you!
Finding ANY Subaru part in Serbia is mightmare, especially turbo parts.
So I'll pass.
Plan is to use T25, MHI TD04-13(or 15) or some hybrid.
As I said, maximum of 1.5bar of boost.
For now I'm preparing engine for bigger turbo and bigger boost.
Head is being completelly prepared(by me) fully ported with 31/29 inlet ports and 29/27 exhaust ports, changed angle of inlet ports, racing valve guides,38.5 inlet valves fully modified(stem diameter shortened for 1mm,3angle cut,polished), stock 33.5mm modified(3angle cut, polished),valve seats(3angle cut).
Plan is to buy forged pistons and cause of that I'm thinking about o-ring, but more I'm thinking the least painless version is to use Nava head gasket with separate fire rings.
You're talking about N/A 1.5 camshaft.
Will it work ok?
Is overlap too big?
Another one question, is there any other Fiat/Lancia engine using same camshaft like uno 1.3 turbo.
Well firstly I can't make engine eith 170/180hp.think when you make this think's you have a very fast uno in standard look :-)
I would like to, but I don't have enough knowledge to do that and the fact I'm not driving Uno but small Zastava Yugo with it's weak chasis.
thank you!
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Acki
To the camshafts. Overlap is 10‚° from Turbo and 20‚° from 1.5 MPI.
It's good for the exhaust gas temperature I think.
38.5mm inlet valves on the 1301 head? Do you have pictures?
I have done this on 1602cc engines... (tipo block and 1.5 spi uno head)
Forget the pressure you want to drive. HOW MUCH BHP do you want to drive?
I think when you drive a good rich mixture you will don't need a o-ring gasket. The gaskets from PAYEN are very good. Holds 2bar and NOS without problems. The guys of the africa uno club use them.
With the T25 you can not drive 1.5 bar. I think there you can drive nearly 180bhp, maybe 190bhp. But I don't think much more with the standard ECU of the uno because you can change the ignition easy.
It's good for the exhaust gas temperature I think.
38.5mm inlet valves on the 1301 head? Do you have pictures?
I have done this on 1602cc engines... (tipo block and 1.5 spi uno head)
Forget the pressure you want to drive. HOW MUCH BHP do you want to drive?
I think when you drive a good rich mixture you will don't need a o-ring gasket. The gaskets from PAYEN are very good. Holds 2bar and NOS without problems. The guys of the africa uno club use them.
With the T25 you can not drive 1.5 bar. I think there you can drive nearly 180bhp, maybe 190bhp. But I don't think much more with the standard ECU of the uno because you can change the ignition easy.
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Yugo_Turbo
Ooops, my bad.
I haven't talled my whole plan.
So,
plan is 150-160bhp on flywheel, with as much toque as I can extract from this tiny engine.
I hope for 180/190Nm9maybe a bit optimistic?)
Custom forged pistons to achive 7.6:1 cr
metal or some other strong head gasket
stock crank
stock rods
stock camshaft(or one from the punto GT or if there will be enpugh money some custom piper or something like that)
fully modified head
intake manifold form punto gt or punto 1.6 sporting
bigger injectors
custom exhaust manifold
bigger turbo(I've allready told wich one)
custom exhaust
programmable injection system controlling fueling and ignition(Megasuirt)
thats about it
about that 1.5n/a cam,
I'm affraid that it will have counter effect, big part of mixture will be blown out I think.
Well, it's wourth of try.
Post yours results here please after you fit it.
You asked about 38.5 intake valves.
Those were 1.6N/A valves which are 39.5 and then are reduced to 38.5.
It's maybe even possible to fit 39mm ones but I left these cause latter there will be maybe fitted bigger ex. ones.
About boost I want to drive.
Well I lied a bit, I dont want big boost engine, I want slightly bigger turbo with much flow not boost.
Having big boost engine in Serbia is extremlly expensive.
There are no parts for servicing or repairing these engines.
Payen gaskets.
Haven't heard for them till now.
Well I bet they are hard to find over here so I'll stick to ones I can get or at least I know where to buy them.
@Guy
Well I hope that this topic has some usefull info.
I haven't talled my whole plan.
So,
plan is 150-160bhp on flywheel, with as much toque as I can extract from this tiny engine.
I hope for 180/190Nm9maybe a bit optimistic?)
Custom forged pistons to achive 7.6:1 cr
metal or some other strong head gasket
stock crank
stock rods
stock camshaft(or one from the punto GT or if there will be enpugh money some custom piper or something like that)
fully modified head
intake manifold form punto gt or punto 1.6 sporting
bigger injectors
custom exhaust manifold
bigger turbo(I've allready told wich one)
custom exhaust
programmable injection system controlling fueling and ignition(Megasuirt)
thats about it
about that 1.5n/a cam,
I'm affraid that it will have counter effect, big part of mixture will be blown out I think.
Well, it's wourth of try.
Post yours results here please after you fit it.
You asked about 38.5 intake valves.
Those were 1.6N/A valves which are 39.5 and then are reduced to 38.5.
It's maybe even possible to fit 39mm ones but I left these cause latter there will be maybe fitted bigger ex. ones.
About boost I want to drive.
Well I lied a bit, I dont want big boost engine, I want slightly bigger turbo with much flow not boost.
Having big boost engine in Serbia is extremlly expensive.
There are no parts for servicing or repairing these engines.
Payen gaskets.
Haven't heard for them till now.
Well I bet they are hard to find over here so I'll stick to ones I can get or at least I know where to buy them.
@Guy
Well I hope that this topic has some usefull info.
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Lui
- Posts: 16
- Joined: December 18th, 2006, 9:07 pm
- Location: Opole- Poland
- Contact:
Ther is one problem with 1.5 camshaft
stock 1.3 uno have ignition distrubutor on the head, 1.5 mpi have distributor on the block
the problem is that 1.5 camshaft dosen't have cut for distributor
if you want to use garrett T25, search model with turbine housing smaller then .64
I have T25 .64 in my uno racing and it starts to boost at about 5000rpm on second gear, 4000rom third gear, 3000 on fourth and fifth
so it is good only for high speed tracks
stock 1.3 uno have ignition distrubutor on the head, 1.5 mpi have distributor on the block
the problem is that 1.5 camshaft dosen't have cut for distributor
if you want to use garrett T25, search model with turbine housing smaller then .64
I have T25 .64 in my uno racing and it starts to boost at about 5000rpm on second gear, 4000rom third gear, 3000 on fourth and fifth
so it is good only for high speed tracks
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Yugo_Turbo
Interesting,
I'm curently searching for some Fiat's cam which I can use on my 1.3 turbo cause my stock cam is in bad shape.
Any ideas?
about turbo,
thank you very much for advice, it will be very usefull.
I want turbo from garrett familly cause of easily found repair parts and because they can be found in so many cars unlike others.
Does anyone have expirience with MHI TD04 turbochargers?
thank you!
I'm curently searching for some Fiat's cam which I can use on my 1.3 turbo cause my stock cam is in bad shape.
Any ideas?
about turbo,
thank you very much for advice, it will be very usefull.
I want turbo from garrett familly cause of easily found repair parts and because they can be found in so many cars unlike others.
Does anyone have expirience with MHI TD04 turbochargers?
thank you!
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Acki
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sumplug
- Posts: 234
- Joined: June 25th, 2006, 10:25 am
- Location: Banned 4th Oct 07 by GC
- Contact:
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Yugo_Turbo
I hope for something like that.150bhp and 200Nm is no problem. You will have more.
I'm going to use PuntoGt or Sporting's intake maniflod cause they have fitted potentiometer(is that wright word?) type TPS sensor and different method of connecting injectors to rail(o rings...).But the 1301cc manifold is bigger than 1372cc turbo or something else.
Why?Use the ignition distrubutor of the 1372cc Uno Racing engine.
Whats wrong with stock UnoTurbo distributor?
Because I wont more boost than stock engine has.Why you will lower the C/R?
Make them higher! 8,5:1 brings you some cheap bhp.
Guy nicely wrote:"more boost-less CR"
And I can't more agree with that
Making it higher will add maybe few Nm on lower rpm, off-boost zone, but latter will cause more headaches.
We have very different approach to building turbo engines.
Maybe I'm not so expirienced as you but I know thing or two and I will build my engines in respects of these things, but keep my ears open for new informations.
But I respect your knowledge totally(as anyone's else here).
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