Remote oil filter kit?

[nola mike]

Looking to install a remote oil filter kit on my hopefully-soon-to-be-installed 4.3L. I have no idea how the accessibility will be prior to the engine install, but figure it couldn't hurt. The OEM kits are well over $300. Auto ones are $50ish. I've seen stuff on here about trouble with the auto kits. For $50 it's worth it, for $300 I'd rather send my 9 year old into battle to remove it from the block. If there's a reasonably priced marine kit (if there's actually a difference), or any recommendations for anything else, let me know. Thanks.

 

[achris]

When I put my 4.3LX in (1994) I added a 'home made' remote kit. Best thing I did.

The V6 block uses an adapter for the oil filter that is smaller than the one for the V8s. Use an allen key to remove it. I got a standard filter mount and attached it to the bulkhead in front of the engine, and used 1/2" ID oil hoses from the engine block remote oil filter adapter to the new mounting. Just be aware that you need to add oil to account for the added volume of the hoses. (I think mine ended up being about an extra litre)...

I'll see if I can find a link to the bits I used...

Chris.......

 

[achris]

Here's the first one I found...

https://www.summitracing.com/int/par...make/chevrolet

It says 'marine rated', but if the hoses aren't 1/2" ID, then I would try to find just the adapters (or buy that kit and only use those) and buy some 1/2" hose and barbs.

I also changed from the V6 filter to the V8 filter. Saved money on the filters.

You'll find the hose get HOT, but the engine runs slightly cooler and holds better oil pressure. As well as being dead easy to do your filter changes.

Chris.....

Here's a Jegs adapter. (this one is 1/2" straight up.) But UP mounted hoses. You can get a side entry filter mounting, but I can't find that one in a kit. Might have to buy the parts individually.

https://www.jegs.com/i/Derale/259/15780/10002/-1

 

[Scott Danforth]

the only issue with a marine vs auto filter relocation kit is knowing where the bypass check valves are in the system and what the pressure limit is.

 

[tank1949]

the only issue with a marine vs auto filter relocation kit is knowing where the bypass check valves are in the system and what the pressure limit is.

Scott, My v8s have these kits too, and the filter kits are mounted on the MC exhaust manifolds. If I drain oil via the kits' included drain hoses, must I refill each oil filter as well as oil pans? My stb engine's kit has hoses that come out of block adapter (where oil filter use to be) and wraps on top of bell housing and is attached to the stb exhaust manifold via another bracket. In my opinion, hoses should have been routed under motor and not on top. Both of my V8s have vertical filter attachments connected to the outward exhaust manifolds. The stb motor has the longest hoses. I suspect that former owner designed this to provide more room between motors to access plugs, etc. The port motor's oil hoses only require about 2' of hoses since the oil filter is mounted on the port exhaust manifold which is near block adapter. The filter and attachment do take extra room. However, my concern is that if I drain oil, should I fill new oil filter with oil before attaching it. There has to be at least 4' of 1/2" hose between stb motor's oil filter and block adapter. I want to maintain prime. I have no idea, if former owner modified their motors' bypass valves. He is having medical issues so I cannot contact him. It has always been my understanding that oil filters have check (anti-drain) valves in their design to help maintain prime?
THX

 

[Chris51280]

I used the one from summit racing. The only downside is that the hose goes up and therefore I have to make a loop to go down to the filter adapter on the block. I zip tied the hoses to something so they wont kink in the loop. It is ok for now but I'm planning on doing a 90 elbow coming out from the filter.
I did one oil change before that conversion and let me tell you,It was not fun at all

 

[Scott Danforth]

Scott, My v8s have these kits too, and the filter kits are mounted on the MC exhaust manifolds. If I drain oil via the kits' included drain hoses, must I refill each oil filter as well as oil pans? My stb engine's kit has hoses that come out of block adapter (where oil filter use to be) and wraps on top of bell housing and is attached to the stb exhaust manifold via another bracket. In my opinion, hoses should have been routed under motor and not on top. Both of my V8s have vertical filter attachments connected to the outward exhaust manifolds. The stb motor has the longest hoses. I suspect that former owner designed this to provide more room between motors to access plugs, etc. The port motor's oil hoses only require about 2' of hoses since the oil filter is mounted on the port exhaust manifold which is near block adapter. The filter and attachment do take extra room. However, my concern is that if I drain oil, should I fill new oil filter with oil before attaching it. There has to be at least 4' of 1/2" hose between stb motor's oil filter and block adapter. I want to maintain prime. I have no idea, if former owner modified their motors' bypass valves. He is having medical issues so I cannot contact him. It has always been my understanding that oil filters have check (anti-drain) valves in their design to help maintain prime?
THX

there are anti-drain-back check valves and there are oil filter bypass check valves. the oil filter bypass is there to bypass the filter if the pressure drop gets too high. this is to maintain oiling even if its not being filtered.

generally when adding a remote oil filter kit, the 11 psi bypass valve gets replaced with a 30 psi valve. this is to ensure that you maintain filtering and minimize bypassing because the remote kits do add a bit more restriction to the system. this is separate from an anti-drain valve.

on an SBC or 4.3, this valve is normally in the bolted on filter adapter on the side of the block. on a Gen V or VI BBC, its in the block the anti-drain back check is normally in the oil filter itself.

if the remote kit replaced this valve, then you should be good. the oil pump itself is still full of oil, so it is still primed

its always a good idea to pre-fill the oil filters when you change oil if you can to minimize the volume of that that slug of air that will get pumped thru the engine when you start up after an oil change

 

[tank1949]

Scott, Thanks--- I was going to pre-fill filters after change! Just to be safe... But, I am still not 100% sure if the 4' long hoses feeding from block adapter to filter/exhaust adapter should run under block or as we have it now (up and over bellhousing to opposite side of block adapter. I don't believe it really matters, but I have spent a lot of time and money on this rebuild and I do not want to destroy or damage the stb motor. Both motors have Moroso large oil pans. I have web searched and cannot find photo of exact pan and capacities. I believe that they hold about 8-10 quarts (best guess). Yet, former owner cannot tell me exactly the oil capacity. He said fill to the dip stick marks. Crank it and then add accordingly when boat is in water (level). He is almost incapacitated due to health reasons. So, I am pretty much on my own for resolving issues.

 

[achris]

tank1949 Please don't hijack threads. If you have a question, create a thread of your own.

Chris
iboats mod team.

 

[tank1949]

tank1949 Please don't hijack threads. If you have a question, create a thread of your own.

Chris
iboats mod team.

No problem, but since my problems may be realized when Nola retrofits his boat, I thought that they were related and would provide more information or concerns for Nola to anticipate.

 

[nola mike]

OK, thanks for the tips! This seems like a no brainer as an addition. Looking through the summit link that achris posted, that should work. I scrolled through the questions and the summit team said that it would work with a 4.3 merc, and that the fittings are 1/2".
Scott Danforth , I thought that most/all canister filters incorporated the bypass valve--certainly the ph8a does (12 PSI), so it doesn't look like that summit kit would have one included? And that I have one hidden on my block somewhere? I didn't see anything that looked like a separate valve on the old 4.3 block. The new blazer block had an adapter for an oil cooler, which I removed. Don't know if there was a valve integrated with that. See the pics below of the adapter. The other one that I'm holding was screwed directly into the old block, and I was planning on using in the new one. Anything I'm missing here? If the filter has an integrated valve at 12 PSI, what would be the point of a 30 PSI valve in the assembly?
@scott51280 , not sure the issue with "up"? Does that route the lines towards the manifold? So that's cured with a basic hardware store 1/2" NPT 90'?

 

[nola mike]

[No message]

 

[Scott Danforth]

This adapter is designed for a remote filter, it looks like an S-10 Blazer adapter.

 

[nola mike]

That adapter in the pic was going to an oil cooler (it was off of the Blazer block), it wasn't for a remote filter. I didn't see a bypass valve anywhere, was wondering if it was in that adapter ? And whether I need to be looking for it or if I can just bolt up that summit kit