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| == Swapping Tunnel panels == | == Swapping Tunnel panels == | ||
| - | The standard B110 tunnel is one piece (front floor). | + | The standard B110 uses one piece lower dash. |
| - | The Auto tunnel is two pieces (front floor + cover). | + | The Auto tunnel is two pieces (lower dash + cover). |
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| + | <img size=400>http://datsun1200.com/uploads/photos/26010.jpg</img> [http://datsun1200.com/modules/myalbum/photo.php?lid=26010 album] | ||
| + | |||
| + | <img size=400>http://datsun1200.com/uploads/photos/26009.jpg</img> [http://datsun1200.com/modules/myalbum/photo.php?lid=26009 album] | ||
| manual transmission | manual transmission | ||
Revision as of 04:15, 12 August 2015
Datsun 1200 originally fitted with automatic transmission has a much larger tunnel. It makes it easier to swap in larger transmissions or larger engines.
Contents |
Overview
Comparo: Manual floor cover vs auto floor cover
album
Manual Tunnel is very small to fit the small stock transmissions and increase space inside the passenger compartment:
The manual body has one piece floor and tunnel, no joins whatsoever - the bellhousing part of tunnel is one piece with firewall.
By contrast the Auto body has seperate tunnel and floor. The tunnel is spot welded in. The seam is clearly noticeable on the firewall at the back of the engine.
auto
NOTE: Unlike a B110, the B210 has a uniform floorpan between auto and manual - the stick and slushbox tunnels are the same on a B210.
Swapping Tunnel panels
The standard B110 uses one piece lower dash.
The Auto tunnel is two pieces (lower dash + cover).
manual transmission 67300-H1000 ASS'Y-PANEL, dash, lower [manual transmission] 74300-H1010 ASS'Y-FLOOR, front [manual transmission]
automatic transmission 74306-H1020 ASS'Y-PANEL, A/T floor cover, front [automatic transmission] 67300-H1021 ASS'Y-PANEL, dash, lower [automatic transmission] 74300-H1021 ASS'Y-FLOOR, front [automatic transmission]
Modified Tunnel
Just take a big hammer and bang the tunnel sheet metal ("massage it") to get more clearance.
"massaged" floor
Or cut part of the tunnel and weld on a bigger section
You can also move the gearbox mounts back to suit various transmissions
Custom Tunnels
Others have successfully bolted or welded in tunnels from:
- B210
- Stanza (1980 510)
- 180B (610)
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- Custom fabricated tunnels
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Tunnel Swaps
Auto Tunnel Swap
Auto tunnel is very large to fit the 71-series Automatic Transmission, but still fits under the heater box.
Auto Tunnel retrofit - tunnel can be cut out, then the new tunnel welded to the floor & firewall:
B210/610 Tunnel
Includes 120Y & 180B.
Fits into a 1200 and still allows for a stock heater:
NOTE: All B210 uses the larger size tunnel.
However the B210 floor pans differ (where the transmissions mount point are). There were eight different ones used by B210. See Tunnel Comparison.
A10 Tunnel
Several club members have fitted an A10 Stanza tunnel to the 1200.
unfamilia:
the satnza tunnel in- looks ok, but i wouldnt recomend it as an easy swap(my first one but piggys 3rd or 4th one). 120y was most stright forward he said, but heaps of room around this one
Shifter Location
Photo showing where to cut the tunnel to fit a standard "short" L-series or CA-series transmission.
Or just move the hole back and weld it back in:
71-series Modifications
71-series Transmission is used by later L-series engine, Z-series engine, FJ-series engine, CA and SR engines.
S13 gearbox clearance in manual tunnel
Rear of tunnel modification:
Reverse Lamp
To fit a 60-Series Transmission 5-speed, move the gearbox Mounts 115mm back:
To remove the brackets, drill out the spot welds
56A Modification
To clear that nasty clutch fork in the later type 56A trans
See Also
Also see: Transmission tunnel Photo Index