Cletus' '68 Plymouth post car

[Tele29]

You know, if you added a second turbo the heat soak from the cross-over pipe would be a distant memory.

Also.... Methanol.

[64valiant]

On 23/05/2022 at 13:00, cletus said:

Yeah that's a good idea, I might look at sealing around it, I made a panel on the VG to stop air escaping over the top for similar reasons  

All I could think of is the air going around the radiator instead of going into it. I know a fan can suck a lot of air but by blocking the sides off you force the air to be directed into the radiator.

 

These parts circled below.

 

 

If you have a shroud may pay to put some holes in it with rubber flaps that could open at max speed to allow more air flow throu it as well.

[mjrstar]

Have you actually taken a radiator temperature? If the radiator isn't scorching hot then airflow isn't the issue. 

Mates old lotus 7 replica thing had hot engine, but you could touch the radiator, so was clearly a coolant flow issue not an air flow issue. 

[cletus]

Thats this weekends plan, I got a infrared thermometer so I can check temps of various things.  Rad does get hot enough that you don't want to touch it though

[Roman]

Be sure to record all of the numbersand post them here... maybe some graphs? 

[Otodat]

It looks like the top and bottom radiator hoses are on the same side of the radiator, is it possible the water flow is not spread over the full width?

[cletus]

Yeah I'd wondered about that, I checked temps at both sides and they were within a degree , although after a tech tip from sheepers on infrared thermometers I'm going to re check it 

[RUNAMUCK]

Bit of a ling'er, but the rad I had made for my ute is a cross flow. I had the guy fit two baffles to the tanks to effectively make it a triple pass. I didnt like that the hot water could effectively go straight to the top of the inlet side tank, and then across the top part of the rad only. 

[RUNAMUCK]

Could you use header wrap on that pipe which is close to the Radiator?

[cletus]

Yes possibly. I hate touching that stuff though  

I've put some heat protective stuff on the bottom tank, I'll see if that makes any difference 

[RUNAMUCK]

Submerge it in a bucket of water, and wear latex gloves. Takes all the unpleasantness out of it.

[Mr.Mk1]

Net spotto 

[cletus]

Oof. That looks sweet. 

 

[Bling]

More of a just here to look at the pics project browser, but I have to ask so I can stop wondering. Timing is all smick yeah and not contributing to the heat issues? Someone may have already asked / I missed you say it is. 

Sweet build though, so clean!

[cletus]

Thanks! 

Yeah timing is in the ballpark of where it should be, 14deg at idle 

I'll get it dyno tuned at some point but I'm pretty sure it's about right

[xsspeed]

have you got room to mount intercooler lower?

[morkster]

All that mucking around you should just get a big brass and copper radiator. They work so much better.

[cletus]

3 hours ago, xsspeed said:

have you got room to mount intercooler lower?

There is room, but it would just end up blocking a different part of the radiator, unfortunately 

[moparmuppet]

Sweet job Clint.

I couldn't keep my big block cool in summer, had electric fans, then OG 4 blade that was better. The fix in the end was a FlowKooler waterpump from Summit and a FlowKooler Robertshaw thermostat.  Milodon do a cheaper copy of the heavy duty type thermostat ( like a sleeve valve, not poppet) but it lasted 2 drives before jamming shut. The FlowKooler stuff is legit and far cheaper than reworking radiators etc if the airflow side is OK.  Good luck.

[MRT1TRD]

Do you have a engine oil cooler? They can make a decent difference to coolant temp, especially on a turbo engine.