mr18 pully fits on a mr20? - Nissan Versa Forums
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post #1 of 26 Old 10-26-2011, 02:16 AM Thread Starter
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mr18 pully fits on a mr20?

i'm asking because someone on allsentra found a mr pully for the versa and cube, we want to know if we can use it on a mr20. i know a couple of you have swaps and conversions to a mr20 so please help us out! thanks.
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post #2 of 26 Old 10-26-2011, 12:30 PM
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if you mean the crank pulley they are the same. I have access to nissan fast if you have any more questions. Also i run the 2.0 in my versa
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post #3 of 26 Old 10-26-2011, 12:41 PM
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The diameters of the outside pulley and inside shaft port will have to be the same (exact). Cam and valves are set for time with the crank. Changing diameters of either pulley will change how the system is timed.

Use a micrometer to measure both the shaft port and the outside diameter of your pulley. Then measure the MR20 pulley. If they are the same, it should work.

The 1.8 and 2.0 ltr engines may have the volume difference in the heads which is why the Versa and Sentra heads are interchangeable. I HAVE NOT DONE THIS MOD AND CANNOT ENSURE IT WILL WORK. I have but 360 heads directly on a 318 motor (V8s) and it was a direct swap.

Finally, adding a head with more ‘dome’ space might give you less power at low end. These are small engines that need higher revs for the power band. While measuring the pulleys, also measure the 2.0ltr head dome compared to the 1.8. Is it wider┐, or deeper┐, Wider will allow you to use the same spark plug but fuel will have more areas to hide and may not combust completely. Deeper will allow you to use a longer plug that will help with combustion.

Please let me know how it goes.
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post #4 of 26 Old 10-26-2011, 01:28 PM
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^ The heads are identical. Along with the cams, timing, intake, exhaust, and basically everything. The only difference between a MR18 and MR20 is piston design and stroke. The oil pumps are different too. Other than that they are THE SAME. Nothing to do with the head
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post #5 of 26 Old 10-27-2011, 03:04 AM
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Steph beat me to it! Would u guy be interested in buying one if we get the hook up? 2jr is making them for like 79 bucks if we get 20 people
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post #6 of 26 Old 10-27-2011, 03:05 AM
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Quote:
Originally Posted by jbeau View Post
if you mean the crank pulley they are the same. I have access to nissan fast if you have any more questions. Also i run the 2.0 in my versa
That the answer we want!
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post #7 of 26 Old 10-27-2011, 05:18 AM Thread Starter
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yeah i meant crank pulley. if anyone wants a lightweight pulley please say so, 2jr can make us a batch but we need 20 people!! heres the thread, you can e-mail them to show your interest or join allsentra, either way works.

allsentra.com-A Nissan Sentra Forum/Sentra Se-r Forum/Sentra Spec-V Forum. All Sentra's(B13,B14,B15,B16 and B17 welcome reguardless of motor or typeView topic - 2.0 Light weight crank pulley
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post #8 of 26 Old 10-27-2011, 06:13 AM
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they are the same

MR20DE swap, AEM CAI, DC Sports Exhaust, NTD Throttle Controller, Tanabe Springs, DC Sports strut bar, Tenzo Type-M wheels, Hankook R-S3 tires
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Does pinocchio have wooden balls? Of course we are interested!
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post #9 of 26 Old 10-27-2011, 09:30 AM
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Come on guys...this a good deal and product is great! I have one on my spec v!! Other ones cost like 120 I seen! This a great deal
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post #10 of 26 Old 10-27-2011, 05:48 PM Thread Starter
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they are the same
we got that about 4 posts ago...lol.
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