Build Engr 88 Pickup - 22RE Megasquirt turbo build

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

I think I'm going to put the head on before the front cover. Also found out that the previous owner did the timing chain and guides but not the tensioner

20221023_212845.jpg


20221023_204021.jpg
 
Last edited:
Why put on the head before the timing cover? Was the timing cover on when the block was decked? Just wondering, it's been a long time since I built a 22RE and they were basically stock.
 
aztoyman said:
Why put on the head before the timing cover? Was the timing cover on when the block was decked? Just wondering, it's been a long time since I built a 22RE and they were basically stock.
Click to expand...
Agree. Hopefully the timing cover was decked to match the block so the head fits.
 
pappy said:
Agree. Hopefully the timing cover was decked to match the block so the head fits.
Click to expand...
It was decked with the cover installed.

I was thinking it would be easier to install the timing chain and cam gear with the head already on but it might be more difficult to get the cover to seal.
 
Alternator pulley turned from 15mm to 17mm for the Denso 120A. Fits perfectly

20221029_194210.jpg


20221029_200638.jpg


20221029_213242.jpg
 
Last edited:
EngEngr said:
Engine is off the to the machine shop for getting sleeved, decked, bored and crank ground - 8 week lead time.
Click to expand...

You happen to know what diameter the bores were taken to in prep for the sleeves?

Also curious about how user friendly (or not) the programming/ease of use is on the MegaSquirt. Thx.
 
88repo said:
You happen to know what diameter the bores were taken to in prep for the sleeves?

Also curious about how user friendly (or not) the programming/ease of use is on the MegaSquirt. Thx.
Click to expand...
I don't know what they did for sleeving. I could try and measure the sleeve thickness but what they did for press fit no idea.

The only thing I have to compare megasquirt to is what I use at work. Talking to a friend that has a holley terminator, it sounds like megasquirt is easier and has a large online community for support. There is a dealer in Iowa that tunes them that has a hub dyno
 
Practicing going from Fusion to g code. Made a cold start blocker plate that I'll eventually tap for temp and pressure

20221030_205919.webp
20221105_205329.webp

20221105_214159.webp
 
Yeah, if you can just throw calipers across the bore and get an approximate off the visible sleeve seams that'd be good.
Just curious as Jim has told me that going .080 over on these is sketchy unless you can confirm a consistent wall thickness as sometimes the molds could be off center a bit.


And kudos on the block off.
I dabbled in g code for a while but was far more productive on a conversational Hurco....cool stuff regardless.
 
88repo said:
Yeah, if you can just throw calipers across the bore and get an approximate off the visible sleeve seams that'd be good.
Just curious as Jim has told me that going .080 over on these is sketchy unless you can confirm a consistent wall thickness as sometimes the molds could be off center a bit.


And kudos on the block off.
I dabbled in g code for a while but was far more productive on a conversational Hurco....cool stuff regardless.
Click to expand...

97.5mm OD on the sleeve. 92.5mm ID
 
So that gives us a sleeve wall thickness of 2.5mm, but what we don't know is if they left a lip at the top to prevent any downward slippage.

Interesting....thanks.

Did Jim any re-shaping of your combustion chambers? Those ports look good btw.
 
88repo said:
So that gives us a sleeve wall thickness of 2.5mm, but what we don't know is if they left a lip at the top to prevent any downward slippage.

Interesting....thanks.

Did Jim any re-shaping of your combustion chambers? Those ports look good btw.
Click to expand...

No, I asked him to keep the combustion chamber volume stock from a 22RE. Compression ratio should be around 9.3

Bore: 92.5mm
Stroke: 89mm
Cyl head: 58cc
Piston: 7cc dish
Deck: 0.006"
Gasket: 0.040"
 
EngEngr said:
No, I asked him to keep the combustion chamber volume stock from a 22RE. Compression ratio should be around 9.3

Bore: 92.5mm
Stroke: 89mm
Cyl head: 58cc
Piston: 7cc dish
Deck: 0.006"
Gasket: 0.040"
Click to expand...

9.3?

Maybe wrong here but I always thought turbos needed around 7.5 to maybe 8.
 
Anxious to get your thoughts on what those RaceTecs sound like after a cold start up.
Got a new set those here now.
My hope is they'll be much quieter than the last rattle trap I built using KB's.
 
88repo said:
9.3?

Maybe wrong here but I always thought turbos needed around 7.5 to maybe 8.
Click to expand...

I'll be fine- a good charge air cooler to reduce manifold air temps, efficient compressor wheel, high octane fuel with the option of running E85, and the megasquirt being able to pull timing under boost. I wanted the higher CR so that it still has some power when not in boost while wheeling.

I believe the 22RTE with 7.5 CR was running 7psi from the factory without a CAC and a cast aluminum compressor wheel and I don't think the factory ECU was pulling timing under boost.
 
Got the head from Jim and starting final assembly. Ran into an issue with the larger alternator and the ear is 4mm thicker than factory and gets in the way of the radiator hose.

20221110_194245.jpg


20221110_214630.jpg


20221111_000910.jpg


20221111_014537.jpg



20221110_231807.jpg
 
Last edited:
You must log in or register to reply here.

Share this page

Back
Top Bottom