i got a mini wrote:
I have a 1100 in my mini with lcb extractors and a head same as. 295 and a 1.5. Carbie and. Re13 cam and it goes really really well enough power to do what I want take over who I want

Except a 1275 with the same amount of work put into it

(sorry, just trolling)
I'm amazed threads like this still get so heated. Everybody knows that a 1275 is going to be faster than a 1098. The question is pretty clear:
Quote:
All i really wanted to know was if i brought a 1100 mini instead of buying a mini with a 1275, how much was i going to need to spend to get the 1100 to go like the 1275... So basicly i drive the 1100 to the shop.. Leave it and when its done, drive away a 1100+ that goes like a 1275...
GR has given his price - $1075. Before in the thread someone was offering a 1275 that probably needs a rebuild for $1200 - probably a fair price. In this case, building up a hot 1098 is the way to go.
What if you want to make 130hp? That's a lot more work to do on the 1098. If you're after that, you'd be better off paying the extra $1000 up front for the 1275, rather than trying to build the 1098 up further. What about 150hp? I would be astounded if anybody can even build a driveable N/A road 1098 with 150hp, but very possible with a 1275.
Horses for courses, as they say. Graham has shown that you can build an affordable, driveable engine without having a 1275. And that would be my personal recommendation as well.