Bluetop Engine Rebuild multiple question Goal 150-160hp

[Hanzo]

Hello Dan,

thank you for your detailed reply.

(04-11-2021 05:28 AM)oldeskewltoy Wrote:  Be careful in your assumptions..... they test one of each heads... that is by no means definitive proof.... additionally it would have been nice to see 3 runs for each and then an average.

3 runs would be even better. This channel is a good indicator which mods are actually working.

Quote:Some care should be used when discussing power ratings - engine power means very little in the real world, wheel horsepower is a far better tell. Wheel hp measured 1:1 (many 4th gears, but not all are 1:1)

Can you get to 150whp with a 4AGE, the answer is no problem, although the largeport intake manifold does become a challenge around 145-150whp. I'm making 145whp in my smallport* using Euro 10:1 pistons - but the head has been extensively worked - chambers now down to about 33cc, so compression is closer to 10.7:1 (* - smallport head and block, with a 40mm crank, rods, and 10:1 pistons) I'm using a mild cam Web camshafts 577 grind - equivalent to a 264 type, using 8.38mm lift. I've kept the smallport intake manifold (single T/B)

Thanks for clearifing that, i meant 150-160hp at the crank.
Which is more like 120-130whp. 150 whp would be fantastic, but i think this will lead to lot more upgrades down the road (like brakes, cooling etc.) I already have a "fast" car so the Levin doesn't need to fulfil that role.^^

Quote:I've built a number of other 4AG heads, and engines as well - https://gallery.ostportworks.com/index.php

My mechanic liked your work. Can you send me price list per PM?

So....

My questions are

Quote:3. I also want to change oil pump, water pump etc. I read that the 20V oilpump fits on any 4 AGE. Did anybody installed a 20V oil pump?Silvertop pump, and smallport 16V use the same pumps(19036) - don't use Blacktop, different timing tensioner

And that's excatly why you can't trust random websites^^. Good to know.

Quote:5. Can anyone recommend a piston sets? Get a set of pistons made - flaw in all stock 16V pistons - poor 2nd ring land support

Very good tip

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