modded 1.9's and 90lbs springs

[hollas13]

im trying to get away with out pulling the heads on my gtp. now if i go with the modded 1.9's are 90lbs springs neccesary or are the stock ones fine? im assuming i have to upgrade the springs along with it. new hydraulic lifters and 7.00 push rods.

[GMR Badass]

#90 springs are reccommended.....Save yourself a lot of money and run the original lifters and pushrods. No need to upgrade those.

[Alix0r]

Like GMR said...Yes upgrade your springs, retainers, locks and seals..but keep the stock lifters and pushrods

[REDCRAPGP]

and you also don't have to pull your heads for a rocker/spring install unless you don't have a decent compressor

[hollas13]

no compressor. already ordered the lifters and push rods to so money already spent. so if i dont have a way compress the spring i will have to pull the heads?

[GMR Badass]

Pulling heads is a bad idea.....Use spring compressor along with air compressor or use spring compressor and turn motor manually with a breaker bar to make the cylinder you're working on be at TDC.

You'll have 3x the cost, head aches, and labor involved in pulling cylinder heads.

Return the lifters and pushrods if you can....it's literally a waste of money.

[Timing]

What greg said return the lifters and push rods and invest in a compressor.

[hollas13]

I didn't even think about making each cylinder tdc when I replace the springs. good idea. so no push rods or lifters? when is it a good idea to replace the lifters and rods then?

[REDCRAPGP]

When you need too lol. Unless your lifters exploded or are ticking loudly (most 3800s have some lifter tick)

[hollas13]

alright thanks guys

[dsmuts]

You have the wrong length pushrods anyway. Stock is 7.05

[darkhorizon]

another trick to change valve springs is to feed rope into the spark plug hole when the piston is near the top to hold the valve closed.

[Timing]

another trick to change valve springs is to feed rope into the spark plug hole when the piston is near the top to hold the valve closed.

I was gonna say this so you dont risk cracking a valve or piston but i prefer compressor

[goldgp]

^^^Ive done this on my mustang motor, works well.

[dsmuts]

For what it's worth I ran stock springs on my old 98 gtp with modded 1.9's

[Alix0r]

^ yes but what were you shifting at?

[dsmuts]

6000rpm

[jsnyder49090]

What is everyone using for compressors I have an engine on a stand and I have a compressor for heads that are off but it wont work? I saw some ls1 compressors on ebay http://www.ebay.com/itm/LS1-LS2-LS3-...06be1e&vxp=mtr does anyone know if this would work?

[Alix0r]

What is everyone using for compressors I have an engine on a stand and I have a compressor for heads that are off but it wont work? I saw some ls1 compressors on ebay http://www.ebay.com/itm/LS1-LS2-LS3-...06be1e&vxp=mtr does anyone know if this would work?

By compressor we mean air compressor to fill the cylinders with air in order to change the springs

[jsnyder49090]

O my bad I meant valve spring compressor ..