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[Datsun 1200 encyclopedia]

L/Z/KA/SR Crossmember

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Categories: Engine Modifications | Engine Swaps

Revision as of 06:45, 9 January 2016
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(->L-series Horns)
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Revision as of 06:47, 9 January 2016
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<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=1151 http://datsun1200.com/uploads/photos/1151.jpg] <br>[http://datsun1200.com/modules/myalbum/photo.php?lid=1151 http://datsun1200.com/uploads/photos/1151.jpg]
-K-DOGG used Bluebird(?) horns+K-DOGG used lowered 1200 horns
<br><img size=400>http://datsun1200.com/uploads/photos/19259.jpg</img> [http://datsun1200.com/modules/myalbum/photo.php?lid=19259 album] <br><img size=400>http://datsun1200.com/uploads/photos/19259.jpg</img> [http://datsun1200.com/modules/myalbum/photo.php?lid=19259 album]

Revision as of 06:47, 9 January 2016

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.

Contents

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.

Traditional L-series (front) vs CA-series (rear)
18809.jpg

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 cut the stock crossmember and modify it. But you don't have to modify the 1200 crossmember -- you can create new engine-side mount brackets, and use stock 1200/B210/B310 crossmember and isolators.

Use a front-sump oil pan with a 1200, 120Y or B310 crossmember.

Datsun B310 engine mount brackets bolt to KA engine:
Left side:
th_IMG156_zps2ad24709.jpg
Right Side:
th_IMG157_zpsa24c5366.jpg

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.

KA custom mounts to use with stock A-series crossmember (late A-series)
th_IMG_0156.jpg th_IMG_0110-1.jpg

Z-series custom mounts to use with stock B110 (early 1200) crossmember
photo-11.jpg
might work for L/SR/KA too

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.

23071.jpg 23072.jpg

Fit stock 1200 crossmember unmodified:
23070.jpg

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)
    23007.jpg
  • 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.)

7714.jpg

Modified Crossmember

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).

Here is a 1200 crossmember, horns removed and low profile horns fabricated:
23232.jpg

click

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
1152.jpg

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)
16922.jpg 16923.jpg 16924.jpg

Z18ET-specific modded crossmember
26002.jpg

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.

10290_4a24cd569ca9e.jpg

10290_4a6416b6cb755.jpg

Notched/sectioned for additional pan clearance
10290_4a76a02e28eae.jpg 10290_4a76a0519af25.jpg

Stanza horns on 1200 x-member
1151.jpg

K-DOGG used lowered 1200 horns
album

Swapping Crossmembers

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: 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. For mid-sump L-series engines.

B310: Use an S110 Silvia/Gazelle crossmember 1980-1983. Bolts right up. Or an A10 (Stanza/510) crossmember For front-sump engines.

Maddat Crossmember

Maddat sells an 1200 crossmember modified for SR.

10290_4d8336d28d5fb.jpg

B210, B310

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 (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:
41EAPYPR5PL.jpg Anchor 8296 for S13.KA24 engine

Comparison: Datsun 510 insulator (L16)
full

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.jpg Anchor 2680/Westar EM-2680 by Golden Rubber
11220-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.jpg 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.jpg Westar EM-2532
These look the same as 510 insulators, but are likely a harder rubber, and a different thickness

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.
album