rb25det front mount question.
rb25det front mount question.
I was reading one of the aussie sites today and one guy said that usingthe R33 crossmember ( in a 92/ 240sx) you can drill the motor mounts about an inch back from the original holes where the rubber mount goes thru and it will make everything fit correctly. Anyone done it this way? And if you have, exactly how far back do you drill them, about an inch is not a real great measurement. And with the transmission being longer anyway, wouldn't this compound the problem at the transmission mount? And yes I did search for this and all I found was info on using the stock mounting holes.
Not sure if it can be done, but i would be concerned about safety. Even though those things are sturdy, i wouldnt go modifying the holes.
Think about it, what if say you didnt tighten the mounts down completely, or if it becomes loose over time. One day you might have to brake hard and the motor may move forward slightly. But given that there isnt much clearance for the motor and radiator to begin with, you might end up with a very expensive problem.
Then you also run into the problem of hood clearance. Drilling those holes may help with the engine being to far forward, but you will still run into the problem with hood clearance, not to mention the motor will be sitting pretty high for a bad center of gravity.
Another problem you may run into is that since you are pushing the motor back BUT not lowering it, the transmission might have clearance problems with the chassis tunnel. This of course depends on many factors.
There are probably a few other problems you may run into by going with this method, but it's all up to you.
It may be a cheap solution, but it may end up costing you in the long run.
a quote from a friend
"Why is there never time to do things right the first time, but there is always time to do it over again?"
-Henry
Think about it, what if say you didnt tighten the mounts down completely, or if it becomes loose over time. One day you might have to brake hard and the motor may move forward slightly. But given that there isnt much clearance for the motor and radiator to begin with, you might end up with a very expensive problem.
Then you also run into the problem of hood clearance. Drilling those holes may help with the engine being to far forward, but you will still run into the problem with hood clearance, not to mention the motor will be sitting pretty high for a bad center of gravity.
Another problem you may run into is that since you are pushing the motor back BUT not lowering it, the transmission might have clearance problems with the chassis tunnel. This of course depends on many factors.
There are probably a few other problems you may run into by going with this method, but it's all up to you.
It may be a cheap solution, but it may end up costing you in the long run.
a quote from a friend
"Why is there never time to do things right the first time, but there is always time to do it over again?"
-Henry
Re: (s14kouki)
Why is there never time to do things right the first time, but there is always time to do it over again?"
-Henry
SPOT ON!!!!!!!
-Henry
SPOT ON!!!!!!!
Re: (rotorimp)
Yeah, this sounded a little too good to be true when I read it, thats why I was asking you guy's, I want to do it right the first time and NOT have to do it again, thanks for the replys. Finally got my motor delivered today and man, these are bigger than they look in all the pictures, its gonna be a tight squeez, and I'm glad this forum is here to help.
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Sykoperformance
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Re: rb25det front mount question. (roadrunr)
Our conversion kit uses the R33 crossmember but relocates the engine rearward and downward to address these problems. The other thing no one mentioned is the steering shaft clearance issues on a LHD car. Simply re-drilling the crossmember doesn't allow proper clearance in this area.
Modified by Sykoperformance at 6:20 AM 3/28/2007
Modified by Sykoperformance at 6:20 AM 3/28/2007