L, Z, KA and SR all use the same crossmember mount points. For swapping any of these engines into a 1200, you can use the stock B110 L-series crossmember or an A-series crossmember suitably modified. Or, use the unmodified A-series crossmember with custom engine-side brackets.
Which crossmember you use determines which oil pan you should fit to the donor engine (or vice-versa). With Datsun 1200 crossmember which is front-sump design, it is best to use a front-sump pan with the donor engine. If you use the lowest-profile sump (e.g. Vanette winged sump) it will fit the 1200 crossmember without needing notching of the pan or the crossmember.
For more details on oil pans, see the individual engine swap articles:
L and Z use the same oil pans, so swaps to the factory winged sump are easy.
Use a front-sump oil pan with the 120y or B310 crossmember.
The bolts attaching the brackets to the engine are larger than A-series, so drill out the holes to match. The brackets are bolted in the back two block holes from where 240SX mount bolts up.
Factory crossmember from L14-powered B110 works with a mid-sump pan. Because it is a very rare crossmember it is rarely seen in swaps.
This crossmember dips very low and comes slightly forward (stock 1200 crossmember is notched slightly to the rear).
- 54401-H2500 MEMBER ASS'Y-cross, front suspension
- 54401-H2501 MEMBER ASS'Y-cross, front suspension (from '71-7)
- 81-34028-1 BOLT (4)
- 89-12340-1 NUT (4)
- 54408-21000 WASHER-plain
- 54408-U0100 WASHER-plain (from '71-7)
- 54407-21000 WASHER-plain
- 11220-A3500 INSULATOR-engine mounting (2)
- 11230-A3500 BRACKET ASS'Y-engine mounting front (R.H.)
- 11233-A3500 BRACKET ASS'Y-engine mounting front (L.H.)
- Uses Datsun 510 Transverse Links
- 54529-A0800 LINK ASS'Y-transverse, front suspension (R.H.)
- 54529-U0102 LINK ASS'Y-transverse, front suspension (R.H.)
- 54530-A0800 LINK ASS'Y-transverse, front suspension (L.H.)
- 54530-U0102 LINK ASS'Y-transverse, front suspension (L.H.)
Stock 1200 crossmember with the horns (uprights) removed and Stanza L-series horns fitted. The Stanza horns fit right on. Use a drill for spotwelds and a grinder to remove the horns.
Only crossmember from 1200s bolt into 1200s: either the original-style 1200 one (1970-1973) or the late-tyle 1200 one (1974-2007). Neither will bolt to engines other than the A-series unless you modify them.
NOTE: These do not fit a 1200: * A10 (Stanza/510) crossmember * B210 (Sunny/120Y) crossmember * B310 (210/Sunny/120Y/140Y/150Y) * 510/610/710 crossmember
B210 North America: Use a Datsun 510 crossmember. Direct bolt-up and matches the HB210 control arms. For mid-sump L-series engines.
B310: Use an S110 crossmember 1980-1983. Bolts right up. For front-sump engines.
Cut the stock 1200 crossmember uprights, weld flat plates at an engle to it. Drill a hole in each plate and slot them for bolting in the engine mount isolators (rubbers).
You can modify the 1200 crossmember: Have the mounts trimmed to an angle simular to that of a 200B, then cut the 200B mounts in 1/2 to finish the job and locate the motor lower and improve the mounting angles. A 910 Bluebird L20B sump fits almost perfect, reshape it with a hammer a little just so it will clear the 1200 crossmember, maybe 1/2cm.
If using other sumps, you may need to do the following: * Remove notch from Datsun 1200 xmember * Reshape sump to clear the Drag Link (cross rod)
Maddat sells an 1200 crossmember modified for SR.
Some guys cut the stock crossmember horns (uprights), and weld on horns from a donor vehicle. Then you can use donor rubber isolators. But you don't have to modify the 1200 -- you can create new engine-side mount brackets, and use stock B110/B210/B310 crossmember and isolators.
You can use the stock 1200 or A12/A14 type crossmember and fit low-profile rubber mounts to it. Then drill simple angle iron to bolt to the engine to match up to the rubber mounts.
Datsun B310 (210/Sunny) can use the crossmember from the Datsun A10 (Stanza/510). It is the same dimensions to bolt to the B310 chassis, but has horns (uprights) for L-series engine.
Details? Please share.
B210 can use a 510/610/710 crossmember. Some report fouling with the Tension Rods on some year/model B210, but a little grinding/cutting will solve that.
For a 1977 USA B210, the 510 crossmember bolts in with no modification.
510 crossmember differences:
- 510 crossmember has the LCA pickup points 1" further apart (making the track 1/2" wider per side) than USA B210. B210 LCAs are 1/2" causing bump steer to change. So weld up and redrill the holes to keep the original steering geometry.
- 510 crossmember is mid-sump design same as USA B210
- 510 crossmember has L-series mounts
Motor Mount Insulators
The rubber Insulators (iosolators) you use depends on which crossmember you use. For an L-series type crossmember the following are usually fitted.
To put a KA/SR in a 510 you run 620 L-series insulators, which they are taller than 510 ones. Left and Right are slightly different, so some run two left side isolators, others use Left and Right as Datsun intended. 620 motor mounts are 2 mm taller than 510 motor mounts.
Although most swappers use 510/620 style insulators because they are lower profile, SR20 and KA24E/KA24DE use this style rubber isolator as stock. Buy at RockAuto.com:
Comparison: L-series insulator (Datsun 510)
Stock PB110 or 510 type * 11220-A3500 INSULATOR-engine mounting (2) $34 USD * 11230-A3500 BRACKET ASS'Y-engine mounting front (R.H.) $48 USD * 11233-A3500 BRACKET ASS'Y-engine mounting front (L.H.) $48 USD
$14 at RockAuto.com
510 specs (L13 uses a softer LH insulator than L16): * 11220-21004 INSULATOR LH L13 * 11220-22000 INSULATOR LH L13, RH ALL * 11220-A3500 INSULATOR ENGINE MTG FRONT (2) ** supercedes 11220-22000
A10 (1978-1981 510) uses double-stud type: $14 at RockAuto.com
620 with L-series engine:
- 11220-B7900 INSULATOR-ENGINE MOUNTING FRONT (2) 1073-0874
- supercedes 11220-B2000 -0973
- 11220-B8000 INSULATOR-ENGINE MOUNTING FRONT RH 0974-
- 11221-B8000 INSULATOR-ENGINE MOUNTING FRONT LH 0974-
triple stud type $5 at [RockAuto http://www.rockauto.com/catalog/x,carcode,1210105,parttype,5552]
(apparently) 710 1975-1977 L20B
Listed (incorrectly?) as 620 1973-1974 L16/L18
620 1975-1978 single-stud type $3 to $14 at RockAuto.com http://www.rockauto.com/catalog/x,carcode,1210127,parttype,5552
These look the same as 510 insulators, but are likely a harder rubber.
Many favor puck-style insulators, because they are readily available in polyurethane (but OEM-style new rubber makes for less vibration). Either style insulator (stock or puck) can fit stock L-type or A-type mounts.