Blocking rb25det block heater hose fittings

[wildeagle44]

Blocking rb25det block heater hose fittings

Hi Guys

In the process of rebuilding my 25.

Since deleting the heater, i've always had the feed and return hoses looped, now the motor is out im looking to block the fittings completely. 

 

The left fitting is threaded in. The right fittings looks pressed in. Am I ok to block these off instead of them being looped? The car is track only and looking to tidy up under the plenum. 

 

Pic attached of fittings in question. Thanks for any help. 

[GeeDog]

Did this recently on an RB25/30 build. We still have the stock oil filter/cooler fitted, and I ran a hose from each of the fittings circled in your pic to the oil cooler. I had to buy a couple of 3/4" to 5/8" (I think) brass adaptors - the fittings in the block are 3/4" (or 19mm), while the oil cooler hoses are smaller. If you aren't using the oil cooler, I'd probably put a hose between these 2 fittings. If you want to block them off you can get blanking plugs to fit - I bought heavy duty silicon ones off ebay to block some other coolant & vacuum pipes.

 

 

[wildeagle44]

Thanks mate

 

If i block them completely it will be fine though? More concerned it might be lacking coolant flow through the motor?

[GeeDog]

No idea - someone else may know. As I said, at the least I'd run a hose between the 2 outlets to keep the flow somewhat similar to stock. Ours has been on the track a couple of times since building the motor, and we've had no overheating issues.

[wildeagle44]

For anyone else looking. I stumbled across an answer. Looks to be ok to block them completely. 

 

 

[-R32-]

Anybody able to confirm exactly what size or thread blanking plugs to purchase to do this? looking to do it this weekend so any advice is appreciated

[GeeDog]

It is a BSP thread - I think it's 1/2" BSP but don't have one here to confirm.

[wildeagle44]

I'll have a dig around for the receipt for the threaded plug. Cant remember the size, i just took the fitting with me to get matched up. 

The plug for the filter housing hole is about 18.5mm. Ended up getting a 3/4in welch plug and ground it down a touch and used some sealant. No leaks so looks good so far.