BT head with ST block.
01-27-2018, 07:26 PM
Post: #1
BT head with ST block.
I am considering this because I cant find a blacktop block. The car in question is a Corolla AE111GT. So I am using over my standard ecu and everything else.

how compatible is a blacktop head with a silvertop block. I know this much. I will need to use the blacktop pistons to avoid contact with the valves.

1)What about the oil pump? Can i use over my blacktop oil pump on the ST block? If i got the St block with its pump can I just exchange the sprocket?

2) Can I use my bt water pump?

3) what timing belt should I use?

4) If I use my blacktop pistons and connecting rod I will have to use crank?
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01-28-2018, 07:47 AM (This post was last modified: 01-28-2018 09:44 AM by Project D.)
Post: #2
BT head with ST block.
1) both oil pump will work. 13521-16060 sprocket for the BT pump; 13521-16010 for the ST (and any other 4AG)

2) Yes you can use your water pump (BT & ST share the same water pump pulley 16371-16030)

3) ST belt with ST oil pump (13568-19035), BT belt with BT oil pump (13568-19185)

4) Every 4AG(Z)E (16 or 20v) from 1987 to 2000 use the same crankshaft (13401-16020)

By the way, if you are swapping all you internal parts, you don't need a 20V block, you could take ANY 4AGE block.
Depending on where you live, it could make your life a lot easier.
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01-28-2018, 05:54 PM
Post: #3
BT head with ST block.
(01-28-2018 07:47 AM)Project D Wrote:  1) both oil pump will work. 13521-16060 sprocket for the BT pump; 13521-16010 for the ST (and any other 4AG)

2) Yes you can use your water pump (BT & ST share the same water pump pulley 16371-16030)

3) ST belt with ST oil pump (13568-19035), BT belt with BT oil pump (13568-19185)

4) Every 4AG(Z)E (16 or 20v) from 1987 to 2000 use the same crankshaft (13401-16020)

By the way, if you are swapping all you internal parts, you don't need a 20V block, you could take ANY 4AGE block.
Depending on where you live, it could make your life a lot easier.


I can also use the silvertop connecting rods with the BT pistons? I believe they are stronger.
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01-28-2018, 11:15 PM
Post: #4
BT head with ST block.
Apart from the early 16v, every 4A-GE use a 20/42mm connecting rod. So yes, you can use any of them.
But if you already have a set of BT rods, go with those. (They are strong enough and lighter)
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01-29-2018, 12:38 PM
Post: #5
BT head with ST block.
(01-27-2018 07:26 PM)CHOPKIN2 Wrote:  I am considering this because I cant find a blacktop block.

Where are you located? I have a spare block.
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02-04-2018, 02:35 AM
Post: #6
BT head with ST block.
(01-29-2018 12:38 PM)mad.matt Wrote:  
(01-27-2018 07:26 PM)CHOPKIN2 Wrote:  I am considering this because I cant find a blacktop block.

Where are you located? I have a spare block.

I am so far away its not funny. I am in the Caribbean. I got in contact with someone that can help me. thank you.
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02-06-2018, 06:27 PM
Post: #7
BT head with ST block.
(02-04-2018 02:35 AM)CHOPKIN2 Wrote:  I am so far away its not funny. I am in the Caribbean. I got in contact with someone that can help me. thank you.

Oh! HAHAHAH!
Yeah....I would NOT like to see the shipment costs for that Tongue
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