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Wed Jan 06, 2010 1:37 pm

Building a baja bug strictly for sand dunes and jumping. I'm building a 2275 and trying to figure out what I want my rev and hp range to be at any help is appriciated thanks

Wed Jan 06, 2010 1:40 pm

For duning with a baja I wold be more interested with your Torque numbers. I'd go with a milder cam and big valve heads with stock porting. I put CNC ported heads on my 2110 and definately felt the loss in the lower rpm range.

Wed Jan 06, 2010 1:55 pm

I've done a 2275 single port with an FK-41 engle cam with OE style 1.25:1 rockers, 40x35.5 heads 8.5:1 compression and a single 40 kadron. It rocks! It revs to about 4500-5000 so it will last forever but the torque is unbelievable. I have a 002 bus IRS right now and there is nothing it won't climb.

Wed Jan 06, 2010 2:15 pm

So don't need a lot of hp just good torque? What should I keep my rpms at?

Wed Jan 06, 2010 2:19 pm

is your bus trans stock, or close 3rd and 4th. a full body baja with paddles will perform better in the dunes with a 1600 and close ratio trans than with stock trans and a 2276. straight up the hills you will be in 2nd anyways so the 2276 will be faster, but through the dunes you will rarely get out of 2nd with stock ratios.

either way, build your engine for torque, not high rpm.

Wed Jan 06, 2010 3:08 pm

Lookingto build a stroker but the trans isstock right now but I vann have it built if It needs to be

Wed Jan 06, 2010 3:13 pm

v DuB kRaZy wrote: Lookingto build a stroker but the trans isstock right now but I vann have it built if It needs to be

not recommending against building a stroker! it's just that you will be wasting your time if you don't have a transmission build for it.

to pull 3rd gear you will have to rev the balls out of 2nd gear, which is a good way to ruin the fancy new 2276 you just built. also forget about ever pulling 4th gear with stock trans in the sand and a full bodied baja bug..

Wed Jan 06, 2010 3:18 pm

That depends on how much tranaxle you want to buy? :D
A nice combination is a 2276 with great heads, Engle 120 or FK 8 cam and Dual Webers. Last time I ws there I had a 2386 w / a W130 cam and
48 IDAs it was a blast but driving slow was a problem and since "I drove it like I stole it" the mildly built T-1 transaxle that held up great on the dragstrip lasted 2 days.

Wed Jan 06, 2010 3:28 pm

perrib wrote: That depends on how much tranaxle you want to buy? :D
A nice combination is a 2276 with great heads, Engle 120 or FK 8 cam and Dual Webers. Last time I ws there I had a 2386 w / a W130 cam and
48 IDAs it was a blast but driving slow was a problem and since "I drove it like I stole it" the mildly built T-1 transaxle that held up great on the dragstrip lasted 2 days.

say I do the 2276 with a 125 cam will that make a huge difference?? I have one sitting in my garage brand new that's why I'm asking lol. And what valve sizes would you recomend??

Wed Jan 06, 2010 3:35 pm

perrib wrote: That depends on how much tranaxle you want to buy? :D
A nice combination is a 2276 with great heads, Engle 120 or FK 8 cam and Dual Webers. Last time I ws there I had a 2386 w / a W130 cam and
48 IDAs it was a blast but driving slow was a problem and since "I drove it like I stole it" the mildly built T-1 transaxle that held up great on the dragstrip lasted 2 days.

say I do the 2276 with a 125 cam will that make a huge difference?? I have one sitting in my garage brand new that's why I'm asking lol. And what valve sizes would you recomend??

Wed Jan 06, 2010 3:36 pm

Let's keep it in one place.

2275cc what to use?