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No money no brains but here we are.........still not boating but I love wrenching on chit when it's 90* out. lol

https://cimg7.ibsrv.net/gimg/www.off...9da7074d5d.jpg

Quote:

Originally Posted by BBYSTWY (Post 4878267)

My vote is a cam swap and whipple it....then you don't have to worry about how the heads flow....however I have not had my boat consistently running more than a few weeks over the last few years so I guess I'm the bad advice committee hahahaha

As others have said...I would leave it unless you're doing something drastic like adding a blower. You can honestly probably play with labbing props and get a couple more MPH and be cheaper than more engine mods on a perfectly good running engine

Just my opinions lol

I thought about a whipple but my cr is relatively high so then it ends up with pistons plus cost is a whipple at 10k. My XR would likely grenade after a few hours and then 15-20k for an SCX. That’s the way to go though, she would be a runner. I would get a lot of boating time too after my wife left me with the kids 😂

Good call on the prop. I could use a few more RPM and have it dialed in. Out of the box B1 28p.

Honestly your XR is likely on borrowed time as it is with your HP and TQ numbers however I see your point. That's the dilemma I was in when I started upgrading and to me knowing what I know now....I would EFI swap it with ignition control, try a -2 which was mentioned in your initial post, and play with props. You will have better drivability and maybe even squeeze a couple ponies out of timing adjustments as you could be a little more aggressive with EFI and with the lower/props I wouldn't be surprised to see the couple MPH gain you are wanting. Just an opinion of a guy with a neverending project hahaha. Looking back I should have just sat down and said this is what my plan is and execute from the beginning instead of trying to patch it together enough to use it for a bit just to take longer overall. Spent way more money than I should have and have been basically boatless for a few years because of it. You have a great base to go off of from the sounds of it and now that the base engine is built and running well from the sounds of it I personally would leave it alone minus the upgrades I mentioned....EFI, lower, and props.

disconnect the speedo and lie to your passengers. whole lot cheaper and they are still impressed with what ever speed you tell them you just went.

Quote:

Originally Posted by compedgemarine (Post 4878319)

disconnect the speedo and lie to your passengers. whole lot cheaper and they are still impressed with what ever speed you tell them you just went.

😂 screw the passengers!

I’ve received some solid advice on this thread and like the idea of some other tweaks versus tearing into a fresh build.

I wanted 80, basically there. Now wants 85 lol

It never ends… that horsepower speed mistress biatch.

:drink:

As the old saying goes..."On this trailer lies a disease for which there is no cure." :boat:

I was told by some reliable sources that the 29 single and 27 didn't gain anything with a shorty lower. Most cases they lost mph. I can't say this is true in all cases but it was true with a guy I know that had a 27.