Well, that's what the guy at the machine shop told me about raising the compression in my sweet little 420A. I have been reading here for a couple months now so I KNOW I know better, but this is my first experience with a specialist telling me he doesn't advise what I'm doing and it's kind of unerving.

I need some reassurance from my bros who've been there and done this.
Here's what I've got cooking:

*10.5:1CR with Eagle ESP H rods, bored .20 over, & new Clevite's all around
*AFX UDP
*port&polish OE TB
*Pacesetter 4-2-1 with 2.5"IDx27" Cherry bomb
*all the required bits that go along with this stuff

I know we run rich and if the ECU detects knock, it can retard to some extent, but assuming I keep her on 91 octane or better, do I really need anything else to be safe? I'd like to get an ignition upgrade here pretty soon afterwards like the Howell coil, but will I be okay here guys?

I'm hoping my good buddy John will hook me up with his PocketLOGGER for a couple days after we get her up and running, so I'l be able to monitor things closer than normal.

Tips? Concerns? TIA!! :thumbsup

Did you tell him that you are already at 9.6:1 stock?

Find a new machine shop IMO. Hell, Celicas run 11:1 bone stock!

Yeah. I also told him I have access to a datalogger and am not worried about ping. :P He seemed to be somewhat curious about how this turns out. I just would like to make sure I'm not missing anything critical here. Am I? TIA!

yea i'd find a new shop, my buddy has a 2000 civic si, he has 12.1 compression...so obviously your guy don't know jack!

Please tell your machine shop guy to come out of the 70's and the early days of unleaded gas...

I don't think this guy has a handle on modern fuel injection and engine management. Which doesn't mean he doesn't know his machine equipment like the back of his hand, but i would stil call around.



15.9 @ 86.7mph

Una Salus Victus.

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Better yet, show him this thread! Make sure you get a picture of his reaction! :+

You guys are funny! Thanks for calming my nerves a bit. :thumbsup
I'll inform him of the CRs of the Celica and Si.
Basic block machining is what he knows and that's all I'm having him do for me.
In any case, I know I'll need to run the 91 octane when I'm done, but do I HAVE to have any ignition upgrades? TIA!

No. You can run 10.5:1 compression with a stock ignition system... hell, you can run damn near anything on a stock ignition system.

I wouldn't start to worry about having to pull any timing until you get over like 11.5:1, unless you have the AFX computer then I would keep a closer eye on it. 10.5:1, no worries.



15.9 @ 86.7mph

Una Salus Victus.

Mods List:
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where do you live? This guy needs some updated info. Depending on your local I would look at Koffel's Place to do it. They have a shop in Waldlake MI and Huron Oh. There specialty is mopar engines and they live to go fast. They built my 2.2 turbo2 motor for me. They also did work on a guys neon head for scca racing. I would recomend them to any one. Good luck :thumbsup

>Please tell your machine shop guy to come out of the 70's and
>the early days of unleaded gas...
>
>I don't think this guy has a handle on modern fuel injection
>and engine management. Which doesn't mean he doesn't know his
>machine equipment like the back of his hand, but i would stil
>call around.
>


Hell, c3's were avialable with 10:1 350's from the factory

You guys are great. I appreciate the input. If it weren't for people like you (us) this site would've died years ago! :thumbsup

I pick up the block Friday afternoon. Today I'm dropping off the head off the parts car to get it tanked and inspected. (Last minute decision to use the other head)

Saturday AM - DR1665s Talon goes under the knife! :o
Sunday AM - all the king's horses and all the king's men get to put Daisy together again! :thumbsup

Again - THANK YOU!

DR, don't forget about VT engines in lansing, mi. I will be picking up my block from them soon. Its got 8.8:1 cause im turboed. But they really know thier shit. they build 550 hp mercury merauders(sp). Sick shit. But i hear Koffel's is good too. when it comes to machine shops michigan has some of the best.

Thanks for the input guys, but I'd rather have it done locally here in Phoenix. For the cost of shipping it out, I could buy more parts. (That is, if I had the money to ship it out!) :P

dont sweat it honda hater i wouldn't sell the 10.5:1 kits if it was gonna blow up your motor on the street =)

in the old days 10.5:1 is pushing it on leaded gas to some peoples comcern...

nowadays 12.5:1 on these cars can be run ons tock ignition i recomend an ignition box at that point though...

Bill

Originally posted by RyaN95i4
>Please tell your machine shop guy to come out of the 70's and >the early days of unleaded gas... > >I don't think this guy has a handle on modern fuel injection >and engine management. Which doesn't mean he doesn't know his >machine equipment like the back of his hand, but i would stil >call around. > Hell, c3's were avialable with 10:1 350's from the factory

my 94 z28 lt1 is about 11:1 they acheived this by reverse flow water pump, aluminum headed 350. a 92 vete has this motor too.

alot of machine shop guys are just old school. they dont know how to properly mill aluminum heads for cast blocks or step a flywheel. be carefull theres alot of old school guys who will scoff at you as they are all set in their ways and only know domestic v8s. keep in mind most people dont rebuild motors anymore like they did in the 70s so they old schools arent used to newer stuff.
have it bored to what u want and whatever else and assemble it your self only way to know its done right or if thats not your thing find a better guy who knows his motors besides 302 and 350 lol