Author Topic: Abarth 1300 OT GMR periscope  (Read 16444 times)

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Offline guy moerenhout

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Abarth 1300 OT GMR periscope
« on: December 02, 2011, 01:46:51 PM »
I start now on building back a Abarth 1300 OT Periscope
Have a look and its  for sale to ;Ready our  rolling chassis
« Last Edit: December 19, 2011, 04:51:54 PM by guy moerenhout »
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Offline guy moerenhout

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Re: Abarth 1300 OT GMR periscope
« Reply #1 on: December 15, 2011, 10:17:08 AM »
front hood fittings  progress
Airflow for front brakes
inner  front wings will be altered to accept the big wheels
« Last Edit: January 19, 2012, 03:23:10 PM by guy moerenhout »
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Offline guy moerenhout

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Re: Abarth 1300 OT GMR periscope
« Reply #2 on: January 02, 2012, 05:03:40 PM »
a update from today ,it  look so good  that whe  will use it in rally
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Offline guy moerenhout

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Re: Abarth 1300 OT GMR periscope
« Reply #3 on: January 05, 2012, 05:47:52 PM »
update  chassis and now in same time thinking on gearbow that goos with the Fiat Twin Cam engine that turns  right.
Normale I wish to adapt a Porsche 911 but mayby you have a better way ?
« Last Edit: January 05, 2012, 05:54:43 PM by guy moerenhout »
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Offline trevor

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Re: Abarth 1300 OT GMR periscope
« Reply #4 on: January 06, 2012, 09:18:17 AM »
One suggestion:-
a) a reverse (left hand) rotation Fiat Twincam using a PBS type reverse rotation auxiliary -oil/distributor- drive-shaft
b) an Abarth - or PBS type- 1300/124/850 bellhousing
c) a Bacci type 137 5 speed -dog engagement - 850 based transmission including optional lsd,  or
d) a 5 speed standard 850 synchromesh transmission with overdrive (currently available Italy)

Advantages are:-
no adaptor plates required for engine / transmission connection;
standard 850 clutch and transmission setups including mountings/linkages/ driveshafts etc used; cv driveshaft options available;
several final drive ratios available on item (c) and (d);

Disadvantages are:-
item (a) alteration of twincam auxiliary driveshaft to replace oil pump/distributor gears, both on the auxiliary shaft and at the base of distributor in block (PBS kits no longer available) ;
item (a) is only an option for block mounted distributors (not cam box mounted) and requires an offset inlet manifold (available) to have sidedraft carburettors not foul the block mounted distributor;
item (c) no synchromesh, "dog" engagement;
item (d) robustness unknown

Offline guy moerenhout

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Re: Abarth 1300 OT GMR periscope
« Reply #5 on: January 06, 2012, 10:10:35 AM »
hallo Trevor ,the cluth plate  porsche have the same splin like the Fiat. I have taken +-11 cm from both bellhousings and place the engine togheter with those  two parts .Now I weld this togheter and have a correct new  bellhousing. I dont need to change engine . I fit a distributor lon the rear off exhaust camshaft and use normale intake manifold with the Webers.I will use the
a normale gearbox  ,no L.S our dougbox because I will drive some regularty  rallys with the car no races  so more comfort than heavy work

Another possibility is to turn the 850  gearbox  upside down(? correct)  and change flywheel  to 850.On that moment I need to make a adaptor with T.C engine

Our mayby someone make shaft to let turn the T.C  left ?
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Offline trevor

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Re: Abarth 1300 OT GMR periscope
« Reply #6 on: January 06, 2012, 11:01:07 AM »
Hallo Guy,
PBS used to make an auxiliary shaft to left turn twincams; it used Ford Escort (US) gears no longer available.
I have photos I can post of the minor engineering involved.
It could be done today using a Fiat 242 or 242E distributor (S147P) and one purpose made small gear inserted into the twincam auxiliary shaft, to match the distributor gear.
If no 242/242E distributor available, then the readily available new  S147 distributor can be easily converted.
I  have photos I can post of the minor engineering involved.
I will post the photos if I can workout how to post them.

Offline trevor

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Re: Abarth 1300 OT GMR periscope
« Reply #7 on: January 06, 2012, 11:12:59 AM »
Hello Guy,
Images mentioned in post a few minutes ago.

Offline trevor

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Re: Abarth 1300 OT GMR periscope
« Reply #8 on: January 06, 2012, 11:24:22 AM »
pbs kit images and Fiat 242 distributor images

Offline guy moerenhout

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Re: Abarth 1300 OT GMR periscope
« Reply #9 on: January 06, 2012, 11:36:28 AM »
wow ,where are friends  for.
Now finding some one that can make the small gear on the auxiliary shaft
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Offline guy moerenhout

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Re: Abarth 1300 OT GMR periscope
« Reply #10 on: January 19, 2012, 03:22:17 PM »
update  today ;special shocks  fitting,doors fitted  en rear bonnet on place
« Last Edit: January 19, 2012, 03:24:15 PM by guy moerenhout »
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Offline karelm

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Re: Abarth 1300 OT GMR periscope
« Reply #11 on: January 21, 2012, 05:54:56 PM »
Starting to look nice! Let those pictures coming!
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Offline guy moerenhout

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Re: Abarth 1300 OT GMR periscope
« Reply #12 on: January 26, 2012, 06:06:42 PM »
become to be a  rallycar
Here you can also see the moulding for the frontwindow.This  will be use to make a new one because old one was missing on factory
« Last Edit: January 26, 2012, 06:08:59 PM by guy moerenhout »
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Offline guy moerenhout

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Re: Abarth 1300 OT GMR periscope
« Reply #13 on: January 31, 2012, 03:01:45 PM »
starting on making place  for fueltank,fitting steering,front airflow from radiator and  front bonnet fittings
Also whe wish to keep a good size wheel like a spare  .So a bit less fueltank must go in.
« Last Edit: January 31, 2012, 03:03:42 PM by guy moerenhout »
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Offline guy moerenhout

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Re: Abarth 1300 OT GMR periscope
« Reply #14 on: February 13, 2012, 11:53:35 AM »
a update  and now  waiting to build  brakes and  engine gearbox inside
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