Engine Mounts And Crossmembers

[shakotan-cefiro]

hi guys hope someone knowledgable can help me out....

iam putting my rb25det into my cefiro as i build the 3ltr bottom end i want to avoid replacing brand new parts eg: mounts or crossmember when the time comes to swap bottom ends i also want to keep the heavier motor as low as possible for a slightly lower cenre of gravity

i need information on engine mounts and crossmember metal mounts ( from block to rubber mount )what combination sits like pics below ?

some say r33 xmember and escort mounts with rb20metal mounts

(but which r33 xmember what series ? and which escort mounts damn it! i need part numbers and mesurements !)

some say ceffy xmember and rx7 mounts again what series rx7 mounts part no's and mesurements

i want this :

or this :

*i have seen this done i dont want to hear about the swaybar hitting the sump or sump being to close to the ground i just want to find out what worked and what combination was used

thankyou

Ben

[Single]

mate im putting an rb26/30 in my s15, it is the biggest (highest) u could get, and therefore im using r32 cross member gtst, same mounts, ive heard i could use a 33 gtst, series 1 and 2 are the same, but the 32 sits lower in an s13 14 15.

and of course u have to mod the gearbox mounts anyway

[shakotan-cefiro]

mate im putting an rb26/30 in my s15, it is the biggest (highest) u could get, and therefore im using r32 cross member gtst, same mounts, ive heard i could use a 33 gtst, series 1 and 2 are the same, but the 32 sits lower in an s13 14 15.

and of course u have to mod the gearbox mounts anyway

the rb26/30 sits lower than 25/30 as the gtr's had front facing plenum and rb25 plenum goes over the rockers

anyway do u have any mesurements for said combination?

[Single]

Yes your right, I will measure upmy metal mounts when I get time, but I am going to do a practice engine drop in and I'll let u know how I go, I'll measure the cross members and the rest for you aswell

[Simon-S14]

only way to get it where you want it is to modify the engine brackets.

in my S14 i have an RB25 with R33 crossmember and custom cut and shut steel brackets which sit 20mm further back and 20mm lower. works a treat as motor is as far back as it will go and allows room for a clutch fan and radiator. nice and low too.

[works 510]

25/30 in my cefiro I used.

stock ceffy x member, rb20 steel and rubber mounts.

Thats it.

I cut a small ammount of the bonnet bracing away just to be sure, but I think would of cleared regardless.

If you have a picture msg enabled phone, I can send you a pic of how mine sits (only have a pic on my phone)

[shakotan-cefiro]

thanks guys .

im gonna try using rb30 43mm rubber mounts, ceffy brackets and im slotting the ceffy crossmember down 20mm and maybe backwards 20mm we will see.

im not to worried about room for the clutch fan as im using twin thermo's but i believe any weight i can get between front an rear wheels will be benificial i will be doing a write up just to let ppl know because finding this info wasnt easy

[STATUS]

any one have the s13 sway bar part number to clear the big rb sumps? i put it somewhere safe before my holidays and cant find it

[Simon-S14]

its a cefiro swaybar, unsure of P/N sorry

[shakotan-cefiro]

ok so ....just posted this on secret drift so i thought id post it here to

in front of me i have:

1x rb25det

1x a31 cefiro

1x r33 s1 xmember

1x a31 xmember

2x r33 engine mounts

2x r31/a31 engine mounts

2x r33 engine brackets

2x a31 engine brackets

the cefiro xmember sits mounts on ~ a 45deg angle the r33 sits almost flat so in order to use cefiro (and r32) xmember

u need to use rb20 brackets and mounts which are longer so it sits to high ! approx 520mm above chassis rail

if you use the r33 xmember with brackets and stock mounts which are 78mm this also sits to high

people have said slot ceffy/r32 xmember which i cant see working as the 45deg angle will not let the motor go any lower due to the width bracket to bracket

i reckon u wanna use:

33 xmember

r31/a31 43mm mounts

and 33 brackets.

The 33 crossmember has two holes for each mount so drill a hole in between the two approx 10-15mm towards firewall

put engine in bolt it all together

this should sit top of rb25det plenum just below the strut tops ~470mm above bottom of chassis rail and this should just clear the ceffy swaybar

this would also put the rb25/30det ~505mm above bottom of chassis rail and bonnet will close perfect on a31 r32 and possibly s13 too

also the r33 steering rack should increase lock as from full left to full right the tie end rods move 145mm in 3 1/8 turns

the cefiro/s13 rack moves 110mm in 3 1/2 from full left to full right

so what are your thoughts on this people need some feedback

[Simon-S14]

here's my solution.

[STATUS]

its a cefiro swaybar, unsure of P/N sorry

got selby swaybars (signature sway bars) on the case, no -one stocks em anymore but they have the pattern.

i used R32 x member, r32 engine brackets (shortened) with N1 gtr mounts (ours is as low as possible sump 3mm from xmember, any closer and it rubbed)

Rx7 mounts for fd are pretty common too. similar to simons solution above. i have a few sets of noltec rx7's ones somewhere i will measure up.

[Simon-S14]

i'd also like to mention that the cefiro crossmember and the r32 crossmember have the SAME part number from nissan... so theres no difference?!

[shakotan-cefiro]

nioce work mate your quite handy arent ya simon !

but solid mounts on the street will not work for me especially with the drive out to mt tamborine every week to see the folks!!

u can also use r32 gtr front swaybar but will promote understeer without upgrading the rear too

also r33gts25t bars clear the sump and if u use the r33 no mods are needed to fit r33 s2 lca's this will reduce understeer in cefiros/laurels and might be a great upgrade for s13 with heavier rb motor and will in turn give you more lock and more camber

food for thought nissan fans

[shakotan-cefiro]

r32 cefiro and laurel share their xmembers although steering is slightly different in r32