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Half resin filled
Posted: Tue Mar 14, 2017 7:45 pm
by Ian Anderson
Hi
A while back I bought a 302 block that I was going to put into the GT40
It was recently sent to an engine shop which advised the block was half filled with resin
Does anyone have any idea what this is done for as no doubt it will seriously effect the cooling of the block.
The engine builder says it is not usable in a road car.
Ian
Posted: Tue Mar 14, 2017 7:52 pm
by katanaman
Posted: Tue Mar 14, 2017 8:50 pm
by Ian Anderson
Cheers Marki
So a boat anchor it is!
Or a dodgy wine rack
Ian
Posted: Tue Mar 14, 2017 8:56 pm
by katanaman
Paint it silver add a bit glass and you have a coffee table. If your married then yes it's a boat anchor.
Posted: Wed Mar 15, 2017 3:28 am
by unstable load
Sling it on FleaBay as an ex-drag bock awaiting it's resurrection and subsequent glory at the Pod.
Someone's bound to bite and get your money back for you.
Posted: Thu Mar 16, 2017 8:25 pm
by Rossco
If its been done correctly it'll have no effect on cooling.
90% of the heat generated is in the top 20% of the cylinder.
Do run an oil cooler though
Posted: Fri Mar 17, 2017 1:06 am
by unstable load
Rossco wrote:If its been done correctly it'll have no effect on cooling.
Rossco, does that apply to a road going engine?
Posted: Fri Mar 17, 2017 6:28 am
by Ian Anderson
Cooling in a GT40 can be marginal at best of time.
Mainly to do with th 7 foot pipes to and from the radiator with the additional drag etc on moving the coolant and when slow you get no air movement around the block (good when it is batting down a track though)
So if anyone fancies a 302 block half filled there will be one hitting e bay soon
I think I may just stick with the bend over unit I have!
Ian
Posted: Fri Mar 17, 2017 10:51 am
by stevieturbo
They do it to try and strengthen the block. But often as you say it's drag cars where cooling systems only need to run for short periods, or cars running on methanol etc, which by nature also run much cooler, so a loss of water in the cooling system is no big deal.
For a UK driven road car running at normal operating temperatures, I wouldnt be wanting a block like that. But it really does depend how much has been filled.
Posted: Fri Mar 17, 2017 11:10 am
by DaveEFI
stevieturbo wrote:They do it to try and strengthen the block. But often as you say it's drag cars where cooling systems only need to run for short periods, or cars running on methanol etc, which by nature also run much cooler, so a loss of water in the cooling system is no big deal.
For a UK driven road car running at normal operating temperatures, I wouldnt be wanting a block like that. But it really does depend how much has been filled.
Are there any chemicals which could dissolve the resin without doing damage to the metal?
Posted: Sat Mar 18, 2017 8:32 am
by Rossco
There are plenty of filled blocks being used for road cars and in ambient temps well above what we get in the UK. It's cetainly not uncommon in the 455 fraternity.
It may as is being said be marginal in a GT40 but with a good oil cooler I'd still give it a go.
Posted: Sat Mar 18, 2017 4:28 pm
by JP.
Just sell that GT40 to me
I am happy with a RV8 in it.
In real, I am in for a GT40 for a reasonable price. Must be pre '87 registration.
Without registration or post '87 I am not interrested as its pain in the as and wallet to get that registrated in Holland.
No problem with a project, but don't want to invent the wheel again.
If you know one please contact me.
Posted: Mon Mar 20, 2017 12:24 am
by stevieturbo
DaveEFI wrote:stevieturbo wrote:They do it to try and strengthen the block. But often as you say it's drag cars where cooling systems only need to run for short periods, or cars running on methanol etc, which by nature also run much cooler, so a loss of water in the cooling system is no big deal.
For a UK driven road car running at normal operating temperatures, I wouldnt be wanting a block like that. But it really does depend how much has been filled.
Are there any chemicals which could dissolve the resin without doing damage to the metal?
Not actually sure what the makeup of the fill is...but it is often refereed to as concrete lol
So it sounds like it would be fairly permanent.
Posted: Mon Mar 20, 2017 8:18 am
by unstable load
Lots of 2-pack resins are susceptible to weakening with heat, but it will probably take enough to cook the block and anneal it, so it looks like it's a sharpened screwdriver and a half-brick to chip it out....
Posted: Mon Mar 20, 2017 5:29 pm
by SimpleSimon
unstable load wrote:Lots of 2-pack resins are susceptible to weakening with heat, but it will probably take enough to cook the block and anneal it, so it looks like it's a sharpened screwdriver and a half-brick to chip it out....
So thats a NO then?