FF vs EFI vs what the hell ?

**Dave S** · 10-28-2020, 02:38 AM

The FF block has different angle on the top of exhaust runners...smoother tanisition to the chest...all 2.5s can be hopped up.... just the FF gives ya a better starting point.........Take a 150 and raise the exhaust ports to the roof of the port casting = 200.......

**Glastron1987** · 10-28-2020, 06:30 AM

Originally Posted by Dave S

The FF block has different angle on the top of exhaust runners...smoother tanisition to the chest...all 2.5s can be hopped up.... just the FF gives ya a better starting point.........Take a 150 and raise the exhaust ports to the roof of the port casting = 200.......

Does this mean that the G 2.4 200 - XR4 is already ported as a 200? I have an XR4, so what do I need to do to it to get the full 200?

**Smalltownbassin** · 10-28-2020, 07:57 AM

Originally Posted by tnelsmn

Not mine, just happened across this a while ago.

TransomStand, your bunny sounds a lot like Rat in the Pearls Before Swine comic strip.

Attachment 475886

Ok, now im confused. Ive got a single F stamp 200 with matching halves but its not a 7 petal. I was told before that sometimes the factory replacement blocks had single letter designation to differentiate them from original parts. I bought this powerhead from a friend not too long ago so havent opened it up yet but the reed plate is definitely 5 petal. Can anyone clear this up for me so i dont have to open it up this afternoon hahaha?

**pappa pete** · 10-28-2020, 09:51 AM

Ok what’s the difference in the PP and LL 260? Small and big bearing? LL sayes drag?

**Noah Burns** · 10-28-2020, 10:42 AM

were FF engines 7 petal originally? The one I'm running right now is 5 petal and was when I got it and pulled it apart to build.

Originally Posted by Smalltownbassin

Ok, now im confused. Ive got a single F stamp 200 with matching halves but its not a 7 petal. I was told before that sometimes the factory replacement blocks had single letter designation to differentiate them from original parts. I bought this powerhead from a friend not too long ago so havent opened it up yet but the reed plate is definitely 5 petal. Can anyone clear this up for me so i dont have to open it up this afternoon hahaha?

**XstreamVking** · 10-28-2020, 10:45 AM

I was thinking the ff was EFI only and from 95-98 model yrs? I don't know fer sure.

**mach351** · 10-28-2020, 10:51 AM

I’ve got a 96 and a 97 FF 200 Carb. One says “Offshore” on the cowl, the other doesn’t.

**Noah Burns** · 10-28-2020, 11:03 AM

Theres a FF offshore posted in the for sale section that's a carb motor. The serial # posted on the listing pulls up to V-200 Carb on mercnet

Originally Posted by XstreamVking

I was thinking the ff was EFI only and from 95-98 model yrs? I don't know fer sure.

**transomstand** · 10-28-2020, 11:20 AM

FF is a 5 petal carb motor

**transomstand** · 10-28-2020, 11:30 AM

Originally Posted by pappa pete

Ok what’s the difference in the PP and LL 260? Small and big bearing? LL sayes drag?

It's very important to note that chart is NOT something official from Mercury. The guy who did it just stuck the Merc logo on it to make it look nice.

Ever since he did it people have been calling me trying to find a "260 Drag".....Well guess what? It doesn't exist. It's just another case of people reading information into something that isn't there. Story I heard was that at the end of production Merc ran out of 260 blocks and started using Drag blocks, but they still have 260 porting and are still 260's.

Christ.....I just started ANOTHER stampede

**mach351** · 10-28-2020, 11:42 AM

Originally Posted by transomstand

FF is a 5 petal carb motor

EFI too

**mach351** · 10-28-2020, 11:44 AM

In my experience all EFI 200’s are FF’s, but not all FF’s are EFI

**Noah Burns** · 10-28-2020, 11:50 AM

So, they sold a "drag" labeled motor that was a 260? if that is the case... it's a 260 drag... also meaning that the chart holds water (even tho it's not from mother Merc.)

If they did not sell 260s labeled as "drag" then ignore the above statement.

Originally Posted by transomstand

It's very important to note that chart is NOT something official from Mercury. The guy who did it just stuck the Merc logo on it to make it look nice.

Ever since he did it people have been calling me trying to find a "260 Drag".....Well guess what? It doesn't exist. It's just another case of people reading information into something that isn't there. Story I heard was that at the end of production Merc ran out of 260 blocks and started using Drag blocks, but they still have 260 porting and are still 260's.

Christ.....I just started ANOTHER stampede