98 cobra build

c-zar · April 23rd, 2011, 05:36 PM

Next week I'm taking my teksid block to the machine shop, i think it will be bored .020 over. I've been looking for complete rotating assemblies and the price is really close to the price of a complete short block, the only difference is that i wont get an aluminum block. I'm planning to go f/i next year, nothing more than 450 hp.
Would you guys go with a forged short block or reuse the aluminum block and throw all forged internals?
Is probe industries any good?
Where can I find a complete engine gasket set?
Also, the engine is going in with long tube headers, I've heard that the egr tube has to be modified. What kind of modification is needed?
Thanks

92Notch · April 24th, 2011, 11:23 PM

If you're looking for only 450hp why would you want to use another block? I'm pretty sure both the teksid and WAP blocks are good for a bit more than that. Also, I've heard good things about Probe, also check out DSS Racing =D

c-zar · April 25th, 2011, 01:17 AM

I was just thinking in the cost effect, the short block has warranty but the probe kit is 1100 cheaper than the short block.
I'll check DSS, thanks.

mfj · April 25th, 2011, 01:52 AM

I am running Probe pistons and I have already made 785 rwhp and will be over 800rwhp once my fuel system is finished. Good stuff.

majorownage · April 25th, 2011, 06:00 AM

Originally Posted by c-zar

Next week I'm taking my teksid block to the machine shop, i think it will be bored .020 over. I've been looking for complete rotating assemblies and the price is really close to the price of a complete short block, the only difference is that i wont get an aluminum block. I'm planning to go f/i next year, nothing more than 450 hp.
Would you guys go with a forged short block or reuse the aluminum block and throw all forged internals?
Is probe industries any good?
Where can I find a complete engine gasket set?
Also, the engine is going in with long tube headers, I've heard that the egr tube has to be modified. What kind of modification is needed?
Thanks

Number one: Do NOT bore .020 over

For internals: Stock crank, used cobra rods or some probes, cp pistons

If you are doing headers, get the best: Kooks or American racing. The rest is are very marginal at best.

heads: Serdi valve job at the least.
Intake: SSR intake (talk to na_svt if you dont want to do it yourself)

block: make sure to align hone, and make sure they have a torque plate for a modular sized engine. The aluminum blocks are very finicky to clearances, and I advise you to pick up a book on modulars before you send your block out.

c-zar · April 25th, 2011, 06:33 PM

I was told that it can be bored .020 over. And I cant reuse my cranks since #7 rod bearing spun.

majorownage · April 25th, 2011, 06:52 PM

Originally Posted by c-zar

I was told that it can be bored .020 over. And I cant reuse my cranks since #7 rod bearing spun.

You don't want to.

Decide what you are doing with the engine and buy parts before waisting money at the machine shop. Been there, done that.

c-zar · April 27th, 2011, 04:45 PM

The block does not need to be bored, so everything is staying at std, I'm going to buy a complete kit from probe industries, crank, rods, pistons, bearings and rings. I feel a lot comfortable knowing that it's staying in std.
Does somebody know where to get a complete gasket set. Modmax has it for $460.
Are the headbolts, main bolts and rod bolts reusable?

cobra99svt · April 27th, 2011, 07:20 PM

Why would you not want to bore .020 over. Isn't that usually a safe bore for these motors? Please explain why this shouldn't be done, becauase I am looking into rebuilding my engine and do forged internals. The mechanic said I should bore .020 over as well. Thanks.

majorownage · April 27th, 2011, 09:45 PM

Originally Posted by cobra99svt

Why would you not want to bore .020 over. Isn't that usually a safe bore for these motors? Please explain why this shouldn't be done, becauase I am looking into rebuilding my engine and do forged internals. The mechanic said I should bore .020 over as well. Thanks.

Bore deflection @ high boost/hp levels

max you want to go overbore is .006ish

majorownage · April 27th, 2011, 09:50 PM

Originally Posted by c-zar

The block does not need to be bored, so everything is staying at std, I'm going to buy a complete kit from probe industries, crank, rods, pistons, bearings and rings. I feel a lot comfortable knowing that it's staying in std.
Does somebody know where to get a complete gasket set. Modmax has it for $460.
Are the headbolts, main bolts and rod bolts reusable?

Why not just get your crank turned?

Non of the above bolts are reusable. I *believe* the jacking screws on 98 and earlier cobras are reusable.

na svt · April 28th, 2011, 04:20 PM

A .020" overbore is very safe, I know someone making over 1000rwhp with a .020" over teksid.

majorownage · April 29th, 2011, 01:13 AM

^^^ I'm going to side with John Mihovetz. But that is all I will say.

mfj · April 29th, 2011, 01:55 AM

Originally Posted by majorownage

^^^ I'm going to side with John Mihovetz. But that is all I will say.

Apples to oranges. Mihovetz runs 60 lbs of boost in his engines...

na svt · April 29th, 2011, 05:55 AM

Originally Posted by mfj

Apples to oranges. Mihovetz runs 60 lbs of boost in his engines...

I can't agree more. If the boost is under 25lbs a .020" will be fine.

mfj · April 29th, 2011, 02:25 PM

Also keep in mind that Mihovetz is spinning his engine over 9000 rpms lol

cobra99svt · April 29th, 2011, 10:10 PM

So on a low boost engine, a .020 over bore will be fine then, right?

na svt · April 29th, 2011, 11:25 PM

Originally Posted by cobra99svt

So on a low boost engine, a .020 over bore will be fine then, right?

Yes, more than safe. It's good for 20psi.

mfj · April 30th, 2011, 06:13 AM

^personally, I'd even say even up to 30 psi would be totally fine...

April 23rd, 2011, 05:36 PM	#1
c-zar Regular 98 cobra motor on 98 GT Join Date: Aug 2007 Location: El Paso TX Posts: 110 iTrader: 0 reviews	98 cobra build Next week I'm taking my teksid block to the machine shop, i think it will be bored .020 over. I've been looking for complete rotating assemblies and the price is really close to the price of a complete short block, the only difference is that i wont get an aluminum block. I'm planning to go f/i next year, nothing more than 450 hp. Would you guys go with a forged short block or reuse the aluminum block and throw all forged internals? Is probe industries any good? Where can I find a complete engine gasket set? Also, the engine is going in with long tube headers, I've heard that the egr tube has to be modified. What kind of modification is needed? Thanks

April 24th, 2011, 11:23 PM	#2
92Notch Enthusiast 1996 Cobra Not fast enough. Join Date: Feb 2010 Location: San Jose..408! Posts: 787 iTrader: 0 reviews	If you're looking for only 450hp why would you want to use another block? I'm pretty sure both the teksid and WAP blocks are good for a bit more than that. Also, I've heard good things about Probe, also check out DSS Racing =D __________________ Mods: Full 01 Cobra drivetrain (Teksid block ) T56, 3.73s, Pro 5.0, Aluminum driveshaft, JLT CAI, BBK O/R X, SLP LM1s, Full welded in sub frame connectors

April 25th, 2011, 01:52 AM	#4
mfj Banned 2001 Cobra Join Date: Feb 2011 Location: Hot Town, AZ Posts: 416 iTrader: 0 reviews	I am running Probe pistons and I have already made 785 rwhp and will be over 800rwhp once my fuel system is finished. Good stuff. __________________ 2001 Cobra- Stroked/Poked/Cammed/Blown 1996 Cobra- CF Clutch/STS/Lowered/CAI- otherwise stock... The daily driver... [SIZE="5"][B][COLOR="Blue"]MM Cobra Club #3.4[/COLOR][/B][/SIZE] [SIGPIC][/SIGPIC]

April 29th, 2011, 01:13 AM	#13
majorownage Regular Join Date: Jun 2010 Posts: 424 iTrader: 0 reviews	^^^ I'm going to side with John Mihovetz. But that is all I will say. __________________ 1998 Gt full pi swap -Dead and gone 1998 Mark VIII 4.30s, 125 shot, 93 d/s-Daily Driver 1998 BAB Cobra-Project

April 29th, 2011, 02:25 PM	#16
mfj Banned 2001 Cobra Join Date: Feb 2011 Location: Hot Town, AZ Posts: 416 iTrader: 0 reviews	Also keep in mind that Mihovetz is spinning his engine over 9000 rpms lol __________________ 2001 Cobra- Stroked/Poked/Cammed/Blown 1996 Cobra- CF Clutch/STS/Lowered/CAI- otherwise stock... The daily driver... [SIZE="5"][B][COLOR="Blue"]MM Cobra Club #3.4[/COLOR][/B][/SIZE] [SIGPIC][/SIGPIC]

April 25th, 2011, 01:17 AM	#3
c-zar Regular 98 cobra motor on 98 GT Join Date: Aug 2007 Location: El Paso TX Posts: 110 iTrader: 0 reviews	I was just thinking in the cost effect, the short block has warranty but the probe kit is 1100 cheaper than the short block. I'll check DSS, thanks.

April 25th, 2011, 06:33 PM	#6
c-zar Regular 98 cobra motor on 98 GT Join Date: Aug 2007 Location: El Paso TX Posts: 110 iTrader: 0 reviews	I was told that it can be bored .020 over. And I cant reuse my cranks since #7 rod bearing spun.

April 27th, 2011, 04:45 PM	#8
c-zar Regular 98 cobra motor on 98 GT Join Date: Aug 2007 Location: El Paso TX Posts: 110 iTrader: 0 reviews	The block does not need to be bored, so everything is staying at std, I'm going to buy a complete kit from probe industries, crank, rods, pistons, bearings and rings. I feel a lot comfortable knowing that it's staying in std. Does somebody know where to get a complete gasket set. Modmax has it for $460. Are the headbolts, main bolts and rod bolts reusable?

April 27th, 2011, 07:20 PM	#9
cobra99svt Regular 99 Cobra / 96 GT vert. N/A Join Date: Mar 2009 Location: Phoenix, AZ Posts: 159 iTrader: 0 reviews	Why would you not want to bore .020 over. Isn't that usually a safe bore for these motors? Please explain why this shouldn't be done, becauase I am looking into rebuilding my engine and do forged internals. The mechanic said I should bore .020 over as well. Thanks.

April 28th, 2011, 04:20 PM	#12
na svt 4v Know-it-all Join Date: Jan 2011 Posts: 488 iTrader: 0 reviews	A .020" overbore is very safe, I know someone making over 1000rwhp with a .020" over teksid.

April 29th, 2011, 10:10 PM	#17
cobra99svt Regular 99 Cobra / 96 GT vert. N/A Join Date: Mar 2009 Location: Phoenix, AZ Posts: 159 iTrader: 0 reviews	So on a low boost engine, a .020 over bore will be fine then, right?

April 30th, 2011, 06:13 AM	#19
mfj Banned 2001 Cobra Join Date: Feb 2011 Location: Hot Town, AZ Posts: 416 iTrader: 0 reviews	^personally, I'd even say even up to 30 psi would be totally fine... __________________ 2001 Cobra- Stroked/Poked/Cammed/Blown 1996 Cobra- CF Clutch/STS/Lowered/CAI- otherwise stock... The daily driver... [SIZE="5"][B][COLOR="Blue"]MM Cobra Club #3.4[/COLOR][/B][/SIZE] [SIGPIC][/SIGPIC]

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