Smaller Engine Oil Fill Cap - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

DarkPira7e · 11-01-2018, 01:28 PM

My current stock engine oil fill cap rubs against the sensor wires on my oil cooler sandwich adapter. Wondering if anyone knows of an aftermarket oil cap that has a thinner overall diameter.

I welcome all questions and intolerances about me not wanting to adjust the sandwich plate; it doesn't leak and I don't want it to leak, so I'm choosing the path of least resistance to resolve this issue. Mind you, this is the wiring going to an oil temp sensor that uses one of the 1/8th NPT fitting on the side. Otherwise there'd be no issue.

Thanks in advance!

Code Monkey · 11-01-2018, 01:40 PM

Just file the cap down a little bit.

Icecreamtruk · 11-01-2018, 01:41 PM

Did you do anything to your sandwich plate for it not to leak or did you just got lucky? Mine seems to believe its job is coating everything around it in oil. Its pretty at that actually.

DarkPira7e · 11-01-2018, 05:28 PM

Quote:

Originally Posted by Code Monkey

Just file the cap down a little bit.

I'm considering a Dremel mod if I can't find something nicer to replace it.

Quote:

Originally Posted by Icecreamtruk

Did you do anything to your sandwich plate for it not to leak or did you just got lucky? Mine seems to believe its job is coating everything around it in oil. Its pretty at that actually.

I torqued it barely hand tight. I researched a lot and found that the spacer cracks. This happens a lot in water cooled computer systems, (very easy to over tighten a barb) so I just barely made it hand tight and left it. Doing well for about 10k miles!

Code Monkey · 11-01-2018, 05:51 PM

The stock cap is very soft, I just used a large file to trim it down.

Icecreamtruk · 11-01-2018, 05:55 PM

Quote:

Originally Posted by DarkPira7e

I'm considering a Dremel mod if I can't find something nicer to replace it.

I torqued it barely hand tight. I researched a lot and found that the spacer cracks. This happens a lot in water cooled computer systems, (very easy to over tighten a barb) so I just barely made it hand tight and left it. Doing well for about 10k miles!

Ohhhhh that makes soo much sense. Well I think I have a craqued spacer then. Will check it out when doing maintenance before next season. Thanks for the info.

Ultramaroon · 11-01-2018, 06:37 PM

Quote:

Originally Posted by Icecreamtruk

Ohhhhh that makes soo much sense. Well I think I have a craqued spacer then. Will check it out when doing maintenance before next season. Thanks for the info.

What brand adapter?

Icecreamtruk · 11-01-2018, 07:03 PM

Quote:

Originally Posted by Ultramaroon

What brand adapter?

Mishimoto, exactly the same as in the picture.

Ultramaroon · 11-02-2018, 01:28 AM

Quote:

Originally Posted by Icecreamtruk

Mishimoto, exactly the same as in the picture.

Ah, then I'm no help. Hope it's an easy fix.

Clipdat · 11-03-2018, 05:57 PM

I appreciate the posts suggesting a DIY approach. However, for those who don't want do go that direction or would like to incorporate a subtle aesthetic/visual engine bay mod into this solution, it would be great to have a list of aftermarket oil caps with known good fitment with aftermarket oil coolers.

I have the same issue with my OEM cap and I would love to replace it with an aftermarket cap that easily clears the sandwich plate fittings!

Clipdat · 11-03-2018, 06:28 PM

I haven't checked aftermarket oil caps for a while, but wow there is quite a selection of them on ft86speedfactory! Some tempting options for sure!

Without knowing the exact outer diameter of the OEM cap and then comparing that measurement value to an aftermarket cap, it's difficult to know what would fit or not.

Hopefully people running aftermarket caps with oil coolers see this thread and can let us know what caps have a good fit.

x808drifter · 11-03-2018, 06:53 PM

If you cant find one, pay someone to either 3d print or CNC one.

Hawk77FT · 11-04-2018, 09:40 PM

Ermm, why no rotate the plate/adapter few mm? or rotate it full 90 degrees counterclockwise ?

FastWhite · 11-04-2018, 10:40 PM

Try RacerX. I had a STI oil cap that rubbed on the adapter. They have a smaller diameter one on their website.

11-01-2018, 01:28 PM	#1
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 4,052 Thanks: 3,307 Thanked 4,202 Times in 2,111 Posts Mentioned: 33 Post(s) Tagged: 0 Thread(s)	Smaller Engine Oil Fill Cap My current stock engine oil fill cap rubs against the sensor wires on my oil cooler sandwich adapter. Wondering if anyone knows of an aftermarket oil cap that has a thinner overall diameter. I welcome all questions and intolerances about me not wanting to adjust the sandwich plate; it doesn't leak and I don't want it to leak, so I'm choosing the path of least resistance to resolve this issue. Mind you, this is the wiring going to an oil temp sensor that uses one of the 1/8th NPT fitting on the side. Otherwise there'd be no issue. Thanks in advance!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Free radiator, fill neck, and engine cover	dstrout	Mid-Atlantic	1	06-05-2018 04:50 PM
Is it necessary to pre-fill the oil filter?	lupindub	Mechanical Maintenance (Oil, Fluids, Break-In, Servicing)	27	06-07-2016 04:58 PM
Fill and paint? or PDR...	rhythmM	Cosmetic Maintenance (Wash, Wax, Detailing, Body Repairs)	3	02-12-2014 10:36 PM
First fill-up...	mit_peid	Scion FR-S / Toyota 86 GT86 General Forum	3	01-20-2013 06:46 PM
Smaller next-gen Mazda MX-5....YES	Mouse	Other Vehicles & General Automotive Discussions	172	12-06-2011 02:21 AM

11-01-2018, 01:40 PM	#2
Code Monkey Senior Member Join Date: Jul 2016 Drives: Subaru BRZ Location: Atlanta, GA Posts: 869 Thanks: 972 Thanked 596 Times in 354 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Just file the cap down a little bit.

11-01-2018, 01:41 PM	#3
Icecreamtruk Senior Member Join Date: Dec 2015 Drives: Track preped NA FRS Location: Montreal, Canada Posts: 987 Thanks: 1,056 Thanked 681 Times in 405 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	Did you do anything to your sandwich plate for it not to leak or did you just got lucky? Mine seems to believe its job is coating everything around it in oil. Its pretty at that actually.

11-01-2018, 05:51 PM	#5
Code Monkey Senior Member Join Date: Jul 2016 Drives: Subaru BRZ Location: Atlanta, GA Posts: 869 Thanks: 972 Thanked 596 Times in 354 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	The stock cap is very soft, I just used a large file to trim it down.

11-03-2018, 06:53 PM	#12
x808drifter LMGTFY Join Date: Mar 2016 Drives: 13 FRS, 91 Miata Location: Lava Town, HI Posts: 2,776 Thanks: 5,561 Thanked 3,650 Times in 1,625 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	If you cant find one, pay someone to either 3d print or CNC one.

11-04-2018, 09:40 PM	#13
Hawk77FT Senior Member Join Date: Jul 2012 Drives: GTS 86 Location: Australia Posts: 989 Thanks: 873 Thanked 476 Times in 272 Posts Mentioned: 12 Post(s) Tagged: 1 Thread(s)	Ermm, why no rotate the plate/adapter few mm? or rotate it full 90 degrees counterclockwise ?

User Name		Remember Me?
Password