What problems with Crankcase Breather fitted this way?

Talk about the E-Type Series 3

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Greensand73
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#1 What problems with Crankcase Breather fitted this way?

Post by Greensand73 » Sun Jun 16, 2019 5:41 pm

Please see the attached picture. My mechanic has the crankcase breather connected directly to one air filter. I have also attached another picture of a V12 (bottom picture) with what i believe is the original factory way, where you can see the breather go into the four carbs. Mine goes just into one air filter. One of the changes made to my car, is that the emission pipes, and crankcase breather pipes were removed, I am trying to understand what effect connecting the breather to one air filter (my car) versus the factory way of connecting to the carbs will effect the performance of my car. What will i see?? Any thoughts will be greatly appreciated,
sandy
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Last edited by Greensand73 on Mon Jun 17, 2019 12:31 am, edited 4 times in total.

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mgcjag
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#2 Re: What problems with Crankcase Breather fitted this way?

Post by mgcjag » Sun Jun 16, 2019 6:19 pm

Hi Sandy...what was the resolution to the AC compressor problem.....would be good to close the thread for anyone who has a similar problem in the future.....Steve http://forum.etypeuk.com/viewtopic.php?f=6&t=14297
Steve
1969 S2 2+2 & Building a C type replica

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Greensand73
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#3 Re: What problems with Crankcase Breather fitted this way?

Post by Greensand73 » Sun Jun 16, 2019 7:28 pm

Hi Steve
Sorry about that.....The issue was a bad AC compressor.

Sandy

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Whitact
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#4 Re: What problems with Crankcase Breather fitted this way?

Post by Whitact » Mon Jun 17, 2019 8:11 am

Hi Sandy,
By connecting the breather that way it is upstream of the throttle butterflies and so will not be seeing the manifold vacuum. It certainly will not work as intended and might make the engine more prone to leak oil from e.g. the crankshaft seal. If the engine is in poor shape oil mist may also foul the air filter and so cause the mixture to run rich. The engine can run well with the other emission equipment removed but its probably better to get the breather put back as Jaguar intended.
Cheers,
Adrian Turner
S3 OTS & FHC
S1 FHC
XK140 FHC

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Greensand73
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#5 Re: What problems with Crankcase Breather fitted this way?

Post by Greensand73 » Mon Jun 17, 2019 12:09 pm

Ok thanks Adrian. I hope i can find original crankcase vent hardware. In the meantime am i better of disconnecting from the air filter, and just connect it to a separate standalone K&N vent filter? Sandy

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AussieEtype
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#6 Re: What problems with Crankcase Breather fitted this way?

Post by AussieEtype » Mon Jun 17, 2019 12:16 pm

That is so wrong - that will just clog the paper air filter with oil - if your mechanic did that to my car I would be getting a new mechanic because his knowledge is poor.

Garry
1971 Series 3 E-type OTS

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#7 Re: What problems with Crankcase Breather fitted this way?

Post by Greensand73 » Mon Jun 17, 2019 2:18 pm

Thanks Garry....you are right...the air filter area is a mess.
Sandy

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Ole-xke1974
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#8 Re: What problems with Crankcase Breather fitted this way?

Post by Ole-xke1974 » Mon Jun 17, 2019 9:52 pm

Time to fine a real mechanic :wrench: :hammer: :hammerdrill:
1974 SIII E-Type w. XJ S2 4sp w. O/D

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