Search found 2507 matches
- Thu Apr 18, 2024 3:04 am
- Forum: Engine Tech
- Topic: E85 Advice
- Replies: 8
- Views: 374
Re: E85 Advice
Vac pump to keep the oil dry, 6-8" of vac is plenty. A bit of methanol fuel stabiliser additive to keep seals etc lubed. Seal the fuel tank between drives (put a note on the steering wheel so you don't forget to uncork the breather). If it's going to sit over winter or whatever then drain the f...
- Thu Apr 11, 2024 10:38 am
- Forum: Engine Tech
- Topic: windsor torino build ideas?
- Replies: 19
- Views: 929
Re: windsor torino build ideas?
+1 for a near stock 460.
Balance, 9.5:1 comp, bit of a cam, 850 on an air gap dual plane.
Will pull tall gearing & low stall speed converter, be well mannered & idle like a happy kitten.
Balance, 9.5:1 comp, bit of a cam, 850 on an air gap dual plane.
Will pull tall gearing & low stall speed converter, be well mannered & idle like a happy kitten.
- Thu Apr 11, 2024 4:45 am
- Forum: Engine Tech
- Topic: 11.5 compression, Iron Head, 91 octane
- Replies: 40
- Views: 1750
Re: 11.5 compression, Iron Head, 91 octane
By the time you do a decent valve job, blend it into the chambers & do a little unshrouding you'll be where you need to be. The valve job & chambers are not nice & need doing anyway, why crutch it with the wrong cam or spend $$$ on injection when the valve job & chambers need fixing ...
- Tue Apr 09, 2024 9:20 pm
- Forum: Engine Tech
- Topic: 11.5 compression, Iron Head, 91 octane
- Replies: 40
- Views: 1750
Re: 11.5 compression, Iron Head, 91 octane
Ouch, manual trans, I probably would want comp closer to 11;1.
- Fri Apr 05, 2024 6:45 pm
- Forum: Engine Tech
- Topic: Leftovers/junk 388 SBC
- Replies: 22
- Views: 1198
Re: Leftovers/junk 388 SBC
That's what a engine like that should make pretty easily. In the 80s we ran pavement late models . 357 inch ,unported 2.02 valve heads. Vic Jr intake and 500 holley 2 barrel on b37 fuel. Flat top rule hyd ft cam. If you didn't make 440-450 hp you did run up front ever.carb location and spacers and ...
- Fri Apr 05, 2024 6:41 pm
- Forum: Engine Tech
- Topic: Leftovers/junk 388 SBC
- Replies: 22
- Views: 1198
Re: Leftovers/junk 388 SBC
Even on junk- the labour kills me. It was pretty cheap, rotator was already balanced, we got away without line boring the block etc. The only new parts were rings, bearings, gaskets, cam, lifters & valve springs. I did minimal extra porting to the heads - well aware they're not worth much time!
- Fri Apr 05, 2024 6:38 pm
- Forum: Engine Tech
- Topic: Leftovers/junk 388 SBC
- Replies: 22
- Views: 1198
- Thu Apr 04, 2024 8:24 pm
- Forum: Engine Tech
- Topic: Leftovers/junk 388 SBC
- Replies: 22
- Views: 1198
Leftovers/junk 388 SBC
Dyno'd this collection of leftovers & junk yesterday & the bloody thing exceeded expectations by a good margin. It's a 2 bolt 350 block, .060" over, ARP main studs, fresh torque plated bores, zero decked. Rotating assembly is an old 400 crank ground to 350 mains, stock 350 rods with ARP...
- Sat Mar 30, 2024 12:06 am
- Forum: Engine Tech
- Topic: HD sportster cranks
- Replies: 4
- Views: 334
Re: HD sportster cranks
As Larry said, a full S&S crank would be the best way to go at the HP you are envisioning. We have used a S&S race prepped crank for a number of years now in a 145hp sand drag Sportster engine with no issues at all. Previously we had an S&S rod set in stock flywheels that would go out ....
- Thu Mar 28, 2024 8:32 pm
- Forum: Engine Tech
- Topic: HD sportster cranks
- Replies: 4
- Views: 334
HD sportster cranks
Going to be doing a freshen/toughen up on my sporty bottom end shortly so I'm not worried about it whenever I spin it past 7000rpm & so I can screw some more HP out of it reliably. Bike is a 94, originally 883, converted to 1200 with bored 883 barrels & wiseco pistons, currently making in th...
- Thu Mar 28, 2024 6:29 pm
- Forum: Engine Tech
- Topic: When does custom porting become beneficial?
- Replies: 60
- Views: 2953
Re: When does custom porting become beneficial?
I just looked up the price of the Profilers, forget that. A set of AFR enforcers will get you where you want to me for 40% less and get you 8mm stem valves and a modern chamber. then you just have to worry about the CSA limitation of the runner. The AFR enforcers are the same casting as the prohead...
- Wed Mar 20, 2024 4:34 am
- Forum: Engine Tech
- Topic: 401 sbc ready for the Dyno
- Replies: 139
- Views: 6865
Re: 401 sbc ready for the Dyno
It may like 1-2 deg less timing, timing marks on 1&5 are a bit low, 2 looks bang on.
Heat range looks good.
Heat range looks good.
- Tue Mar 19, 2024 6:16 pm
- Forum: Engine Tech
- Topic: 401 sbc ready for the Dyno
- Replies: 139
- Views: 6865
Re: 401 sbc ready for the Dyno
Just a small pointer, motor should be cooled off between pulls & water & oil temps kept consistent for each pull.
A 20 deg change in oil temp can change power by up to 5hp.
So if you're looking for small changes its best to keep oil temp at the start of each pull within 5 deg of the baseline.
A 20 deg change in oil temp can change power by up to 5hp.
So if you're looking for small changes its best to keep oil temp at the start of each pull within 5 deg of the baseline.
- Fri Mar 15, 2024 12:53 am
- Forum: Engine Tech
- Topic: Pushing the limits of a BMC A series head - max effort circuit race
- Replies: 17
- Views: 1046
Re: Pushing the limits of a BMC A series head - max effort circuit race
Cool! I was hoping something relevant to grandad's Morris 1000 was going to show up :p Got a few questions: How big are those exhaust ports? And how does that relate to stock size? What header do you plan on using? Is that combustion chamber shape better for combustion or was it mainly about flow? ...
- Thu Mar 14, 2024 6:27 pm
- Forum: Engine Tech
- Topic: Pushing the limits of a BMC A series head - max effort circuit race
- Replies: 17
- Views: 1046
Re: Pushing the limits of a BMC A series head - max effort circuit race
Single, splits may happen down the track, or maybe a pair of mikuni HSR42 flat slides.hoffman900 wrote: ↑Wed Mar 13, 2024 8:02 pmSplit Weber or single on a manifold with bends?KnightEngines wrote: ↑Wed Mar 13, 2024 6:20 pmNo idea!Erland Cox wrote: ↑Wed Mar 13, 2024 6:18 am How much less hp will an engine with dual SU carbs give?
Erland
All the ones I've dealt with have run a Weber.