Are 7A and KV bottom ends the same?

leehidson · 29-11-10, 05:11 PM

Just wondered

4v6 · 29-11-10, 05:36 PM

Pretty much so.

Id suggest there may be some differences with the counterweighting on the cranks for the different piston weights tho, something youd need to address by getting them balanced-just in case.
Its possible there are some other differences tho , so not 100% on this.

K Simmonds · 29-11-10, 06:21 PM

7A, NG, KV, 3B, ABY, AAN and ADU all use the same part number Crankshaft.

andy e · 29-11-10, 06:34 PM

The South African 10V 2.3 in my VW uses a 7A head gasket according to Etka.

quattrostyle · 29-11-10, 08:47 PM

7A block has oil squirters for piston cooling, KV doesn't

vag_nutter · 20-12-10, 02:27 AM

Arent the bores on the 2.3l engines larger than the kv?

29-11-10, 05:36 PM	#2
4v6 Ex Member Classic Audi Club Member Join Date: Dec 2007 Posts: 5,565	Pretty much so. Id suggest there may be some differences with the counterweighting on the cranks for the different piston weights tho, something youd need to address by getting them balanced-just in case. Its possible there are some other differences tho , so not 100% on this.

29-11-10, 06:21 PM	#3
K Simmonds Senior Member Classic Audi Club Member Join Date: Dec 2009 Location: Mid Wales Posts: 1,060	7A, NG, KV, 3B, ABY, AAN and ADU all use the same part number Crankshaft.

29-11-10, 06:34 PM	#4
andy e andy e Classic Audi Club Member Join Date: Oct 2007 Location: South Devon Posts: 170	The South African 10V 2.3 in my VW uses a 7A head gasket according to Etka.

29-11-10, 08:47 PM	#5
quattrostyle 4 ring whore! Classic Audi Club Member Join Date: Feb 2010 Posts: 2,188	7A block has oil squirters for piston cooling, KV doesn't

20-12-10, 02:27 AM	#6
vag_nutter Grown up member Classic Audi Club Member Join Date: Apr 2010 Location: New Zealand Posts: 92	Arent the bores on the 2.3l engines larger than the kv?