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Post by moclan on Apr 13, 2020 10:13:50 GMT
So as I’m thinking of refreshing an mk1 1.8 engine, its going to get a blink head, what are your thoughts on going for a later bp6 oil pump. Specifically the one from the vvt engine. Supposed to have an increased oil flow.
any undesired effects, impossibilities. I’ve read on miataturbo that it was a hint thicker 0,020”, would that effect the mounting of the crank pulley etc? Anybody done this?
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Post by Zed. on Apr 13, 2020 11:07:10 GMT
.020" is ~1/2mm so I doubt that'd cause issues  put a wanted add up everywhere for an old one to use for reserch purposes? Rich. |
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Post by schercheeroo on Apr 13, 2020 13:56:48 GMT
Fitted a mk2 pump to my mk1 block.
No issues.
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Post by martiny on Apr 13, 2020 18:10:51 GMT
Interesting. I hadn't heard that the later oil pump was bigger. Looking at IL Motorsport (just for example) I see they sell NB oil pumps which are the same part for Mk.2 and 2.5. So is the bigger pump on all NB engines rather than specifically for VVT?
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Post by cardo on Apr 13, 2020 18:31:28 GMT
I’m pretty sure the VVT pump was designed for greater flow to supply the camshaft actuator and solenoid.
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Post by martiny on Apr 13, 2020 18:47:46 GMT
I’m pretty sure the VVT pump was designed for greater flow to supply the camshaft actuator and solenoid. Yeah, I can see that makes sense. Just curious that ILM sell one oil pump for both VVT and non-VVT NB engines. Of course it's also possible the larger pump was specified with VVT in mind, even though the VVT parts didn't get fitted until the facelift. |
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Post by cardo on Apr 13, 2020 19:01:20 GMT
Yep,that’s a possibility...or IL Motorsport only stock the later VVT pump as it’s a straight swap for the earlier unit that was only made for a 2 year run.
MX5parts only list 1 pump for all 98 to 05 models too.
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Post by cardo on Apr 13, 2020 19:08:09 GMT
Boundary list 2 different gear sets for their uprated pumps, non VVT and VVT....
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Post by moclan on Apr 13, 2020 20:49:46 GMT
From what I gather, there were 2 different pumps for the mk2 & mk2.5 but as time went by the vvt one became the only one for the mk2. Industrial economies.
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Post by moclan on Jun 11, 2020 10:21:54 GMT
Would anybody have a VVT oil pump on hand and take some pics for me please? I would like to see the cast markings.
I bought a second hand one that I was told came from a MK2.5 VVT, problem with buying over sea got to trust the seller, and well I nor 100% sure it is from a VVT engine, at least not originally.
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le sigh