53-681 Posted March 28, 2011 Posted March 28, 2011 Hi Guyz, Is it possible to fit an R31 or Holden VL RB30 engine mount into a 260Z with very little or no modification? Quote
nat0_240_chevZ Posted March 29, 2011 Posted March 29, 2011 yea close, but angles arent quite right, do require mods but are the closest std items, my mounts are based on these but posn the engine back and down furthar. still utilises either an r32 or r31 engine rubber mount isolators. the stock'ee mounts mount the ginge too far forward in the engine bay, ie about 100mm + from the firewall to the back of the head. buy my mounts before you go buy salvaged items, nat0 Quote
jamo240 Posted March 29, 2011 Posted March 29, 2011 Hey 53-681 I am finishing of an RB25DET installation in my 240Z, and I would say it is a substantial modification to put it in...not particularly difficult, but there is a fair bit to it. Specifically regarding the engine mounts, I just modified the RH side from a stock VL mount, but the LH side I made from scratch. That is required to put the engine in the correct location in all three axes. As for the rear mount, I used a shortened version of an R33 Skyline mount, and also had to remove the existing 'saddle' from the Z body (drill out the spot welds), then narrow it about 12mm, and move it back about 60mm and weld it back into the body. This is required to make room for the larger Skyline gearbox and pick up the mounting point where the gearbox isolator is. I also had to reconfigure the saddle to accomodate the Skyline trans mount, so it now has 4 x M12 bolts in the vertical plane holding it to the saddle/body, instead of the two horizontal clevis bolt arrangement in the standard 240 gearbox mount...finally, I recessed the LHS mounting point up into the tunnel as far as possible to make room for the exhaust pipe, as a 3.5"pipe ends up annoyingly low if you just make a straight trans mount. This way, I tuck the exhaust up in that area as high as possible, so not much hangs down below the horizontal plane of the chassis longitudinals, and I mount it to the gearbox in this area, so I keep as much structure-borne exhaust vibration out of the cabin as possible. Let me know if you need help. CHeers Jamo Quote
53-681 Posted May 1, 2011 Author Posted May 1, 2011 VL ones? I also heard that with the VL ones, you gotta reverse the sump? Quote
nat0_240_chevZ Posted May 2, 2011 Posted May 2, 2011 lol@ lurch, contradicting your black/white status..... yes will ned a mid/rear sump bowl regardless...... so add to your shopping list. no my mounts are all custom to put the engine in an ideal position, ie 50mm back and 15mm from memory downward. nat0 Quote
sco_aus Posted May 2, 2011 Posted May 2, 2011 lol Lurchos. The only easy way is for the 200ZR mounts, have fun finding them... Quote
nat0_240_chevZ Posted May 2, 2011 Posted May 2, 2011 or buy mine!!!! buy buy buy last already made set still available, you WILL need a new or modified sump...... Quote
53-681 Posted May 2, 2011 Author Posted May 2, 2011 bah, its hard to pass out emotions in text I guess **Bitchy/childish voice** Quote
MaygZ Posted May 2, 2011 Posted May 2, 2011 I've got an idea. the RB30 is said to put out 114kW (RB30E), the L26 about 110kW and the L28 (280zx) is said to put out 125kW. It seems logical to me therefore to spend a significant amount of money to to RB30 The same or less money into the L28 or L26 could produce quite a monster. There are much better engine swaps in my opinion. Then again if you modify your engine, you wont be allowed to drive for a couple of years. If you've always wanted a VL, then buy a VL! Past my bedtime I reckon. Quote
Moderators Zedman240® Posted May 2, 2011 Moderators Posted May 2, 2011 If you're going to that much trouble to install an RB, i wouldn't waste my time with a SOHC version.. At the very least an RB25DE (then throw another few thousand bucks at it to get the same power as a healthy L28). Either a RB25DET or just stick to a good L series with some good mods and you should be happy with the result. Quote
nat0_240_chevZ Posted May 4, 2011 Posted May 4, 2011 unless you get an rb30et, which is a torque monster...... ive seen massive #'s from the local variants head, once boosted the single valve in/out is not such an issue for filling combustion chambers, ie flow restrictave.... Quote
chartoo Posted May 4, 2011 Posted May 4, 2011 Cant you buy ready made mounts from castlemain rod shop for a few hundred? Quote
nat0_240_chevZ Posted May 5, 2011 Posted May 5, 2011 yea but engine sits too high and too far forward, speak dimitri..... & they dont look very nice and they cost more than mine......$150 engine mount brackets only and the money goes to a shop that already looks after aussie built cars. ie v8's.... buy buy buy..... http://www.viczcar.com/forum/index.php/topic,7573.msg71475.html#msg71475 Quote
Moderators Zedman240® Posted May 5, 2011 Moderators Posted May 5, 2011 When I bought my mounts from CRS, one side had to be sent back to be modified; was in the wrong location. Better off making yuour own. Quote
nat0_240_chevZ Posted May 5, 2011 Posted May 5, 2011 which i did, 4 sets but sold a couple already Quote
53-681 Posted May 7, 2011 Author Posted May 7, 2011 canary yellow vl turbo broooooooooooooooooooooooooooooooooooooooooooo Nah, I was more or less aiming for the RB20DET, as it seems like the most cost effective turbo 6cyl engine out there which might last me for quite some time, but....... I am in a little bit of $$$ constraint at this stage also so I'll prob have to pass up on your awesome offer there nat0 But hopefully, when the time is right, I will deff look back into it! Just knowledge gaining for the time being... By the way, thanx a million guys for posting very often! Hopefully one day I'll be able to support you all aswell :/ I know a lot of PHP, MySQL, Cisco, AD? Quote
kyloh Posted November 13, 2019 Posted November 13, 2019 On 5/1/2011 at 1:03 PM, nat0_240_chevZ said: still need mounts? nat0 Hey I do! Im doing a rb30 into a 260z do you still have them and or photos of them? Thanks Quote
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