Author Topic: Connecting rods?  (Read 5384 times)

August 22, 2008, 02:27:08 pm

monomer

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Connecting rods?
« on: August 22, 2008, 02:27:08 pm »
Building a 1.6 TD. Are stock rods good enough for high HP? (over 200)
-1983 Rabbit LX 1.6/1.9 VNT build


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Reply #1August 22, 2008, 02:29:19 pm

monomer

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Connecting rods?
« Reply #1 on: August 22, 2008, 02:29:19 pm »
-1983 Rabbit LX 1.6/1.9 VNT build


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Reply #2August 22, 2008, 02:33:33 pm

blkboostedtruck

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Connecting rods?
« Reply #2 on: August 22, 2008, 02:33:33 pm »
when Dave built his franken motor at P.P. he was at 198HP and thinks he bent a rod! so i think it would be wise choice!
but there is others here with more knowledge that will chim in!
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Reply #3August 22, 2008, 03:55:18 pm

Jet A

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Connecting rods?
« Reply #3 on: August 22, 2008, 03:55:18 pm »
Yup, Cant beat billet h rods. But i dont see the 1.6 listed.

You will want rods if you are serious about 200+. especially with the amount of boost you will need to run.
85 vw golf NA ----> 2b TD  Daily Driver
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Reply #4August 23, 2008, 03:29:38 am

monomer

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Connecting rods?
« Reply #4 on: August 23, 2008, 03:29:38 am »
Quote from: "Jet A"
Yup, Cant beat billet h rods. But i dont see the 1.6 listed.

You will want rods if you are serious about 200+. especially with the amount of boost you will need to run.


what about cranks also?



I was hoping the 1.8 rods would work, since it's basically the same engine. I'll have to call on that one.
-1983 Rabbit LX 1.6/1.9 VNT build


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Reply #5August 23, 2008, 04:44:38 am

subsonic

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Connecting rods?
« Reply #5 on: August 23, 2008, 04:44:38 am »
2009 Jetta TDI Loyal edition, 6-spd. 16V 2.0CR


1985 VW Golf 5-spd, 4-door, 1.6NA  Bought from orig. owner in Savannah with 42,000 miles.
"Making the jump NA to TD" slow but sure.

1980 VW Rabbit LS 5-spd, 4-door 1.6NA almost 450,000miles  RIP

Reply #6August 26, 2008, 03:50:38 pm

SMOKEYDUB

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Connecting rods?
« Reply #6 on: August 26, 2008, 03:50:38 pm »
i would love to see you grab above 200 hp :) especially in a 1.6 idi.....you will need to do something with the head gasket issue and the bending rods..... Did anyone on here find a fix for the high boost idi's that keep lifting the cylinder head clean off the block? o and that kind of hp don't count on daily drive ability... :D
12mm PUMP 'O' DEATH on a 1.6L
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2000 NISSAN XTERRA (5 SPD)
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1.8t AEB soon around 550 whp

Reply #7August 26, 2008, 08:03:00 pm

monomer

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Connecting rods?
« Reply #7 on: August 26, 2008, 08:03:00 pm »
Quote from: "SMOKEYDUB"
i would love to see you grab above 200 hp :) especially in a 1.6 idi.....you will need to do something with the head gasket issue and the bending rods..... Did anyone on here find a fix for the high boost idi's that keep lifting the cylinder head clean off the block? o and that kind of hp don't count on daily drive ability... :D



I only expect to see those numbers with the boost in the 20's-30's


It will be a DD, which is why everythings getting overbuilt. boost wont go above a bar unless it's cruse night.
-1983 Rabbit LX 1.6/1.9 VNT build


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Reply #8August 26, 2008, 08:19:42 pm

Turbinepowered

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Connecting rods?
« Reply #8 on: August 26, 2008, 08:19:42 pm »
Quote from: "monomer"
Quote from: "SMOKEYDUB"
i would love to see you grab above 200 hp :) especially in a 1.6 idi.....you will need to do something with the head gasket issue and the bending rods..... Did anyone on here find a fix for the high boost idi's that keep lifting the cylinder head clean off the block? o and that kind of hp don't count on daily drive ability... :D



I only expect to see those numbers with the boost in the 20's-30's


It will be a DD, which is why everythings getting overbuilt. boost wont go above a bar unless it's cruse night.


I'm thinking you're going to need more than 20s for boost pressure... seems that there are several guys on here in the 100hp range running 20+ PSI boost...

Reply #9August 26, 2008, 08:29:04 pm

monomer

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Connecting rods?
« Reply #9 on: August 26, 2008, 08:29:04 pm »
Quote from: "Turbinepowered"
Quote from: "monomer"
Quote from: "SMOKEYDUB"
i would love to see you grab above 200 hp :) especially in a 1.6 idi.....you will need to do something with the head gasket issue and the bending rods..... Did anyone on here find a fix for the high boost idi's that keep lifting the cylinder head clean off the block? o and that kind of hp don't count on daily drive ability... :D



I only expect to see those numbers with the boost in the 20's-30's


It will be a DD, which is why everythings getting overbuilt. boost wont go above a bar unless it's cruse night.


I'm thinking you're going to need more than 20s for boost pressure... seems that there are several guys on here in the 100hp range running 20+ PSI boost...


should go upto 30 no problem.

after that is when things start breaking and you have problems controlling the turbo....
-1983 Rabbit LX 1.6/1.9 VNT build


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Reply #10August 26, 2008, 08:43:55 pm

Turbinepowered

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Connecting rods?
« Reply #10 on: August 26, 2008, 08:43:55 pm »
^ What he said.

200hp out of a 1.6l engine is 125hp/liter, almost three times the stock power density (42.5hp/liter for a 68hp 1.6) and over two and a half times the power density of the 90hp TDI (47.368hp/liter) engines with their computerized controls and direct injection helping things along.

Just some tidbits...

Reply #11August 26, 2008, 08:54:09 pm

monomer

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Connecting rods?
« Reply #11 on: August 26, 2008, 08:54:09 pm »
1.9 head will be used.

CR will be lowered slightly.



again 200+ is a goal. maybe not this year or next, I will have a dyno sheet in my hands that says over 200hp...
-1983 Rabbit LX 1.6/1.9 VNT build


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Reply #12August 26, 2008, 09:00:26 pm

jackbombay

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Connecting rods?
« Reply #12 on: August 26, 2008, 09:00:26 pm »
Finding a turbo that will push a 4:1 PR with the low flow that is inherent to a 1.6 Liter engine is pretty much impossible. To get 50 PSI that will be somewhat reliable will take compound turbos, which is getting into some pretty tricky fab work, besides the head scratching trying to figure out which turbos are suitable.

Reply #13August 26, 2008, 09:09:53 pm

jtanguay

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Connecting rods?
« Reply #13 on: August 26, 2008, 09:09:53 pm »
if money is no object, or you have access to the right equipment, and are determined, i think you should have no problem achieving 200hp.  just stick with what these guys are saying, and everyone here will give good advice to help you along.

that being said, go with a big ass VNT turbo  :twisted: and check out dave 935racer's turbo setup for sale.  you will need that if you wish to hit 200hp.  well maybe not need but it will sure help!


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Reply #14August 26, 2008, 09:43:10 pm

jackbombay

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Connecting rods?
« Reply #14 on: August 26, 2008, 09:43:10 pm »
Quote from: "jtanguay"
that being said, go with a big ass VNT turbo  


  They are about as good as you'll do with a single turbo, but are not designed to push more than 28 PSI. pairing it (a vnt 20 lets say) up with a gt20 could be a good way of getting decent spool and 50 PSI, but keeping the head on would be a trick for sure.