3 registered members (Edinburgh, 386ka, 1 invisible),
152
guests, and 3
spiders. |
Key:
Admin,
Global Mod,
Mod
|
|
Forums69
Topics113,638
Posts1,341,420
Members1,814
|
Most Online731 Jan 14th, 2020
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Hoops82]
#1586107
06/10/2016 10:51
06/10/2016 10:51
|
Joined: Dec 2009
Posts: 148 Sofia, Bulgaria
injekciona
On a journey
|
On a journey
Joined: Dec 2009
Posts: 148
Sofia, Bulgaria
|
I use a 22mm cam belt from the old fiat td90 engine installed in tipo/tempra/145/6. In order to fit the 22mm belt the only thing that should be modified is the crankshaft cam belt pulley. It's quite good and a cheap modification but I don't have the balance shafts installed.
Jet Black E46 M3 EX - Broom Yellow Fiat Coupe 1.8 -> 2.0 16VT Speed Red Fiat Coupe 2.0 16VT R.I.P.
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: injekciona]
#1586109
06/10/2016 12:36
06/10/2016 12:36
|
Joined: May 2007
Posts: 229 Perth, Western Australia
Hoops82
OP
Making a profit
|
OP
Making a profit
Joined: May 2007
Posts: 229
Perth, Western Australia
|
I use a 22mm cam belt from the old fiat td90 engine installed in tipo/tempra/145/6. In order to fit the 22mm belt the only thing that should be modified is the crankshaft cam belt pulley. It's quite good and a cheap modification but I don't have the balance shafts installed. Excellent, I was hoping you might comment, so in essence, to fit this belt one requires a different bottom pulley and would be able to retain the balance shafts even though you haven't?
Resting UK
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Hoops82]
#1586121
06/10/2016 16:44
06/10/2016 16:44
|
Joined: Dec 2009
Posts: 148 Sofia, Bulgaria
injekciona
On a journey
|
On a journey
Joined: Dec 2009
Posts: 148
Sofia, Bulgaria
|
I'm almost sure that you can use the 22mm td90 cam belt with the balance shafts, but you won't be able to install the balance shaft belt. You'd need to install a wider bearing on the balance shaft. A different bottom pulley is not needed, the stock one can be modified on lathe.
Jet Black E46 M3 EX - Broom Yellow Fiat Coupe 1.8 -> 2.0 16VT Speed Red Fiat Coupe 2.0 16VT R.I.P.
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Hoops82]
#1586159
07/10/2016 06:05
07/10/2016 06:05
|
Joined: May 2007
Posts: 229 Perth, Western Australia
Hoops82
OP
Making a profit
|
OP
Making a profit
Joined: May 2007
Posts: 229
Perth, Western Australia
|
Ok, so does the original cam pulleys fit the wider belt? This is the belt you are talking about right? http://m.buycarparts.co.uk/snr/1927897With 173 teeth and part numbers ALFA ROMEO (7596876) ALFA ROMEO (7596877) FIAT (7596876) FIAT (7596877) LANCIA (7596876) LANCIA (7596877)
Last edited by Hoops82; 07/10/2016 08:00.
Resting UK
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Hoops82]
#1586177
07/10/2016 11:04
07/10/2016 11:04
|
Joined: Dec 2009
Posts: 148 Sofia, Bulgaria
injekciona
On a journey
|
On a journey
Joined: Dec 2009
Posts: 148
Sofia, Bulgaria
|
Yes, the 22mm cam belt fits the original cam pulleys. I use only the belt from the td90, not the entire kit. The cam belt adjustable tensioner that is installed on my car is the Coupe one. You just need to find what size of bearing should be installed on the balance shaft. When I upgraded to 22mm cam belt my balance shafts was already removed. The belt part number is 7596722.
Jet Black E46 M3 EX - Broom Yellow Fiat Coupe 1.8 -> 2.0 16VT Speed Red Fiat Coupe 2.0 16VT R.I.P.
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: crgracing]
#1586575
12/10/2016 19:51
12/10/2016 19:51
|
Joined: May 2007
Posts: 229 Perth, Western Australia
Hoops82
OP
Making a profit
|
OP
Making a profit
Joined: May 2007
Posts: 229
Perth, Western Australia
|
SO if I understand correctly, we can use the 22mm belt on the standard camshaft pulleys and crankshaft pulley?
Partly correct, yes it fits the cams but no it doesn't fit the bottom pulley. I'm still waiting on it to arrive but will take some photos shortly. Frogot to ask, the bearing of the balance shaft( the one were the cambelt slides on) how do you manage to get it of without tkaing the engine out? the last time I changed it I remeber taking thje engine out. This time I would like not to waste all that time. Any idea on that?
I would say drop the mounting one side ( cam belt end obviously) and lift the car or engine relative to one another you should then be able to manoeuvre it out.
Resting UK
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Hoops82]
#1586662
13/10/2016 23:00
13/10/2016 23:00
|
Joined: May 2007
Posts: 229 Perth, Western Australia
Hoops82
OP
Making a profit
|
OP
Making a profit
Joined: May 2007
Posts: 229
Perth, Western Australia
|
A picture says 1000 words as they say so here are some pictures taken of my spare engine on its stand so nice and accessible. The cam shafts will definitely fit a 22mm belt The bottom end is where it all gets a bit tight. There just isn't room there for a wider belt unless the balance belt is removed and a small pulley only for the cam drive is fitted. The smaller wheel top of image is the cam belt drive off the crank and the bigger wheel bottom of image is the balance belt drive from the crank. It may be possible to machine a few mm from the back of the balance belt drive to obtain the necessary extra 4mm to get the 22mm belt in there. Finally, the other problem as suggested earlier in the thread is that the tensioner is not wide enough to take an extra 4mm. A wider tensioner will therefore need to be installed. So there we have it. A wider belt fitment whilst retaining the smoothness of the balance shafts requires some crank pulley machining and a wider tensioner.
Last edited by Hoops82; 14/10/2016 23:42.
Resting UK
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: crgracing]
#1586744
14/10/2016 23:43
14/10/2016 23:43
|
Joined: May 2007
Posts: 229 Perth, Western Australia
Hoops82
OP
Making a profit
|
OP
Making a profit
Joined: May 2007
Posts: 229
Perth, Western Australia
|
Great news Hoops but we cant see the images oops, have edited and rectified now hopefully. Unfortunately this little project will stall for me now for a few months as i will be on a different continent to the spare engine that i will be using to fabricate the required parts.
Resting UK
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Hoops82]
#1586822
16/10/2016 08:48
16/10/2016 08:48
|
Joined: Dec 2005
Posts: 1,723 Brisbane, Australia
Possum
My life on the forum
|
My life on the forum
Joined: Dec 2005
Posts: 1,723
Brisbane, Australia
|
[Unfortunately this little project will stall for me now for a few months as i will be on a different continent to the spare engine that i will be using to fabricate the required parts. Why not "bite the bullet" and import your Coupe. We could always do with another 16VT "Downunder".
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Hoops82]
#1586824
16/10/2016 09:57
16/10/2016 09:57
|
Joined: Feb 2006
Posts: 220 Czech republic
Honza
Making a profit
|
Making a profit
Joined: Feb 2006
Posts: 220
Czech republic
|
I have 2 16V engines and both has wider belt kit...
One is 1" conversion kit purchased from deltaparts... everything fits OK, however there was "small trouble" with crank pulley, which should be further modified (the nose was too wide, and the pulley didnt fit correctly to crank, so after start up of engine, there was strong wobble of crank pulleys assembly.. we had to narrow the nose and then everything was OK)
Second is "home-made" 22mm conversion kit made from Alfa TS (or 20V, 1.8 16v etc..)modified crank pulley and cam pulleys from variator side and special adaptor to 16V cams... by this way I have adjustable pulleys... both engines have removed balance shafts... something simmilar is offered also by deltaparts...
20 years with yellow 2.0 16v NA 22 years with black SEDICIVALVOLE
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Possum]
#1586832
16/10/2016 10:48
16/10/2016 10:48
|
Joined: May 2007
Posts: 229 Perth, Western Australia
Hoops82
OP
Making a profit
|
OP
Making a profit
Joined: May 2007
Posts: 229
Perth, Western Australia
|
Thank you for your input and knowledge @honza and @injecktiona. [Unfortunately this little project will stall for me now for a few months as i will be on a different continent to the spare engine that i will be using to fabricate the required parts. Why not "bite the bullet" and import your Coupe. We could always do with another 16VT "Downunder". I am gearing up to this. Have amassed quite a few parts in recent years and the coupe has given good results with Leighton at castle Combe so when he is finished with some other maintenance jobs I may shape up for the import to WA. I would love to drive it over East for the fiat nationals.....
Resting UK
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Hoops82]
#1586857
16/10/2016 19:37
16/10/2016 19:37
|
Joined: Jan 2008
Posts: 1,289 spain
crgracing
My job on the forum
|
My job on the forum
Joined: Jan 2008
Posts: 1,289
spain
|
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Hoops82]
#1586926
17/10/2016 21:15
17/10/2016 21:15
|
Joined: May 2007
Posts: 229 Perth, Western Australia
Hoops82
OP
Making a profit
|
OP
Making a profit
Joined: May 2007
Posts: 229
Perth, Western Australia
|
2017 will be too early but maybe the next year is a goal. It's at a convenient time with the salt flat racing in late Feb early march, lake gairdener SA. If one is going to cross the nullabor then best to take as many birds with one stone.
Last edited by Hoops82; 17/10/2016 22:54.
Resting UK
|
|
|
Re: 16vt 1in or 25mm cam belt conversion
[Re: Hoops82]
#1586998
18/10/2016 22:13
18/10/2016 22:13
|
Joined: Jan 2008
Posts: 1,289 spain
crgracing
My job on the forum
|
My job on the forum
Joined: Jan 2008
Posts: 1,289
spain
|
Hoops are those the correct part number? Ill possibly do this mod next cambelt change as I have just changed my cambelt.
Last edited by crgracing; 18/10/2016 22:15.
|
|
|
|