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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.
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Overview
The L,CA, KA and SR engines use different rubber isolators, but use the same basic crossmember layout. By mixing and matching the isolators and/or using spacers, a single universal style crossmember can be used.
L-series (front) vs CA-series (rear)
SR20 has the bolt slot forward of L/Z and CA
Oil Sump
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 (e.g. 200B) 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-series Engine Swap Z-series Engine Swap KA Engine Swap SR engine swap
L and Z use the same oil pans, so swaps to the factory winged sump are easy.
Stock
A-series Crossmember
Some guys modify the stock crossmember. But you don't have to modify the 1200 crossmember -- you can create new engine-side mount brackets which line up with the stock 1200/B210/B310 crossmember and isolator rubbers.
Use a front-sump oil pan with a 1200, 120Y or B310 crossmember. Use a mid-sump pan with a USA B210 crossmember.
KA Engine
Datsun B310 engine brackets bolt to KA engine. 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.
Left side (Late A-series, short side)
Right Side:
KA Method 2 - same as above, but with extra reinforcement
KA custom mounts to use with stock A-series crossmember (late A-series)
Z-series custom adjustable mount, might work for L/SR/KA too
Z-series Method 2
You can use the stock 1200 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.
Z fits stock 1200 crossmember unmodified (or can be notched to get it lower)
PB110 Crossmember
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.)
Modified Crossmember
Cut off the stock 1200 crossmember uprights (horns), then 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).
1200 crossmember with horns removed:
Here is a 1200 crossmember, horns removed and low profile horns fabricated:
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)
Modified curve rearward for engine setback
CA, notched to lower the engine
High-profile horns to raise engine and notched/sectioned for more clearance. This is done to fit common pans (if you can't find the right pan). L20B will hit the bonnet with this mod.
Z18ET-specific modded crossmember. Normally the height difference is handled by the engine brackets, but in this case he built it into the crossmember
L-series Horns
Stock 1200 crossmember with the horns (uprights) removed and A10 L-series horns fitted. The A10 (Stanza/510) horns fit right on. Use a drill for spotwelds and a grinder to remove the horns.
Notched/sectioned for additional pan clearance
Stanza horns on 1200 x-member
K-DOGG used lowered (cut-down) 1200 horns
With L-engine brackets attached
Swapping Crossmembers
Only crossmembers from 1200s bolt into 1200s: either the original-style 1200 one (1970-1973) or the late-style 1200 one (1974-2007). Both are designed for A-series engines.
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: Use a Datsun 510 crossmember, which is a direct bolt-up. See B210 section
B310: See B310 section
Maddat Crossmember
Maddat sells a 1200 crossmembers. Slot the holes toward the center of the crossmember, as the Maddat has the holes a little forward to fit the CA. Use a front-sump pan from a Stanza.
See Main Article: Maddat CA18 crossmember
B210, B310
B310
For front-sump oil pans.
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.
Use an S110 Silvia/Gazelle crossmember 1980-1983. Bolts right up to the B310. Originally designed for Z-series engine, and KA lines up to it as well.
B310 A-series crossmember. Bottom: factory Z-series crossmember
B210
Use a Datsun 510 crossmember, which is a direct bolt-up and matches the USA HB210 control arms. For 120Y, swap in 510 control arms and 2" struts. Works with mid-sump engines. For front-sump, use a 510 reversed crossmember.
For front-sump pans, A10 Stanza horns welded to 120Y crossmember, works with use 200B, 910 Bluebird or Stanza sump. Locates the engine about 30mm further back than if you use the 610/180B crossmember
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: * Wider LCA pivot points * mid-sump design * L-series mounts
510 crossmember has the LCA pickup points 1" further apart (making the track 1/2" wider per side), compared to 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.
Stock 510 crossmember for mid-sump engine
Reversed 510 crossmember for front-sump engine
Motor Mount Insulators
The rubber Insulators (isolators) 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 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 SR/KA 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 (Anchor 8296 for S13.KA24 engine):
Comparison: Datsun 510 insulator (L16)
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) < 11220-22000
double-stud type: $14 at RockAuto.com * A10 (1978-1981 510) * S110 (1980-1983 200SX) Anchor 2680/Westar EM-2680 by Golden Rubber11220-D8100 > 11220-W5900 S110.L18E * A10 L16/Z16/Z18 11220-U7401 11220-W5300 11220-W5301 * 810 1977-1978 Bluebird
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
Anchor 2404
(apparently) 710 1975-1977 L20B
Listed (incorrectly?) as 620 1973-1974 L16/L18
620 1975-1978 single-stud type $3 to $14 at RockAuto
Westar EM-2532
These look the same as 510 insulators, but are likely a harder rubber, and a different thickness
Nissan A10
A10 Violet/Auster/Stanza/510
mount rubber Isolators
- 11220-W5301 INSULATOR ASSY-ENGINE MOUNTING L20E, L20B S110, A10 $41 USD
- 11220-U7402 INSULATOR ASSY-ENGINE MOUNTING A10 $54 USD
- supercedes 11220-W5300, 11220-U7401
- 11320-32F01 INSULATOR ASSY-ENGINE MOUNTING REAR [transmission mount] $129 USD
- supercedes 11320-W5900
- A10, S12 CA18ET.MT + CA20E.MT + VG30E.MT
For L20B RockAuto.com
Anchor 2456 engine mount $5 at RockAuto.com
Anchor 2680 alternate type $10 to $17 at RockAuto.com
Rear engine mount (transmission mount) Beck/Arnley 1040853
11220-U7401 INSULATOR ASSY-ENGINE MOUNTING FRO 2 -0978 11220-U7402 INSULATOR ASSY-ENGINE MOUNTING FRO 2 -0680 11220-W5900 INSULATOR ASSY-ENGINE MOUNTING FRO 1 1078-0680 2 11220-U7401 11220-W5301 INSULATOR ASSY-ENGINE MOUNTING FRO 1 0780- 0 11220-W5900 11220-U7401 INSULATOR ASSY-ENGINE MOUNTING FRO 1 1078-0680 0 11220-W5301 INSULATOR ASSY-ENGINE MOUNTING FRO 1 0780- 0 11220-U7401 11220-W5300 INSULATOR ASSY-ENGINE MOUNTING FRO 2 SEDAN(L16) HARDTOP,WAGON 11232-W5800 BRACKET-ENGINE MOUNTING FRONT,RH 1 L20B 0779- 11232-N8400 BRACKET-ENGINE MOUNTING FRONT,RH 1 Z20S 0779-0680 0 11232-W5800 11232-W5800 BRACKET-ENGINE MOUNTING FRONT,RH 1 -0679 11232-W8900 BRACKET-ENGINE MOUNTING FRONT,RH 1 Z20S 0780- 0 11232-N8400 11233-W5800 BRACKET-ENGINE MOUNTING FRONT,LH 1 -0679 11233-W5800 BRACKET-ENGINE MOUNTING FRONT,LH 1 L20B 0779- 11233-N8400 BRACKET-ENGINE MOUNTING FRONT,LH 1 Z20S 0779-0680 0011233-W5800 11233-W8900 BRACKET-ENGINE MOUNTING FRONT,LH 1 Z20S 0780- 0 11233-N8400 08121-02525 BOLT-HEX,W/WASHER (BLOCK TO BR 4 SEDAN(L16) HARDTOP,WAGON -0678 08121-02562 BOLT-HEX,W/WASHER (BLOCK TO BR 4 SEDAN(L16) HARDTOP,WAGON 4-DOOR HB(L16) 0778- 2 08121-02525 08911-64010 NUT-HEX,M10X1.25 (INSULATOR T 4 SEDAN(L16) HARDTOP,WAGON 4-DOOR HB(L16) 08915-14010 WASHER-SPRING (INSULATOR T 4 SEDAN(L16) HARDTOP,WAGON 4-DOOR HB(L16) 08915-54010 WASHER-PLAIN (INSULATOR T 4 SEDAN(L16) HARDTOP,WAGON 4-DOOR HB(L16) 11320-W5900 INSULATOR ASSY-ENGINE MOUNTING REA 1 -1077 11320-W5901 INSULATOR ASSY-ENGINE MOUNTING REA 1 1177- 2 11320-W5900 11341-W5900 MEMBER-MOUNTING REAR 1 5-SPEED,AUTO (FED,CAN) -0680 11341-W5500 MEMBER-MOUNTING REAR 1 5-SPEED,AUTO (FED,CAN) 0780- 11341-W5900 11341-W5500 MEMBER-MOUNTING REAR 1 5-SPEED,AUTO(CAL) 11341-W5300 MEMBER-MOUNTING REAR 1 4-SPEED(FED,CAN) 0780- 0 11341-W5800 11341-W5800 MEMBER-MOUNTING REAR 1 4-SPEED(FED,CAN) -0680 11341-W5300 MEMBER-MOUNTING REAR 1 4-SPEED(CAL) 11390-K2500 BOLT-ENGINE MOUNTING REAR (INSULATOR T 2 08911-10810 NUT-HEX,M8X1.25 (INSULATOR T 2 08915-13810 WASHER-SPRING,M8 (INSULATOR T 2 08911-10810 NUT-HEX,M8 (INSULATOR T 2 08915-13810 WASHER-SPRING,M8 (INSULATOR T 2 01115-00121 BOLT-HEX,M10X1.25 (MEMBER TO B 4 08915-14010 WASHER-SPRING (MEMBER TO B 4 08915-54010 WASHER-PLAIN (MEMBER TO B 4 2 08915-44010 08915-44010 WASHER-PLAIN (MEMBER TO B 4
Puck Type
Many favor puck-style insulators, because they are readily available in polyurethane, although OEM-style new rubber makes for less vibration. Either style insulator (stock or puck) can fit stock L-type or A-type mounts.
See main article: Engine_Mounts#Puck_Type