Mercruiser alpha Exhaust Manifold Riser Gasket

[series60]

How do I determine which Mercruiser alpha Exhaust Manifold Riser Gasket to use. Do I need a restricted gasket or open?

 

[Bt Doctur]

all depends on log style, center rise style, standard cooling, closed cooling, riser extentions, wet joint or dry joint systems
give us the correct engine serial number and we can find out for you

 

[series60]

Thanks, here's what I have for the engine.
Center rise style, standard cooling,
Eng model: MCM 228R
228 HP 4 bbl 305ci
Eng SN: 6811457 block # 14010201 5.0LG

 

[Bt Doctur]

restricted for normal applications, 4 slot open for riser extentions,

 

[Bt Doctur]

8	36305	2	ELBOW, (90 Degrees), EXHAUST MANIFOLD	-
9	87105	2	GASKET, ELBOW	(USE WITH RISER KITS)
10	41813	2	GASKET, EXHAUST ELBOW	(STANDARD COOLING)
11	41811	2	GASKET, EXHAUST ELBOW	(CLOSED COOLING)
12	98504A 3	2	ELBOW ASSEMBLY, Exhaust	(15 DEGREE - 3 INCH OUTSIDE DIAMETER